Ophthalmic apparatus capable of measuring the shape of a cornea

Claim 2

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark positioned substantially on an optic axis and a second index mark positioned around the optic axis; an imaging optical system for re-imaging the cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second image marks; and calculating means for calculating the information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means.

Claim 3

An ophthalmic apparatus according to claim 1, wherein said first index mark is a light source which comprises an alignment light source.

Claim 4

An ophthalmic apparatus according to claim 1, wherein said first index mark is a light source comprising a fixation light source.

Claim 5

An ophthalmic apparatus according to claim 1, wherein said second index mark is a ring-shaped light source.

Claim 6

An ophthalmic apparatus according to claim 1, wherein said first and second index marks are infrared light sources.

Claim 7

An ophthalmic apparatus according to claim 1, wherein said light position detecting means is a two-dimensional image pickup element.

Claim 8

An ophthalmic apparatus according to claim 1, wherein said light position detecting means is a plurality of one-dimensional charged coupled devices.

Claim 9

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark positioned substantially on an optic axis and a second index mark positioned around the optic axis; an imaging optical system for re-imaging the cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second image marks; and calculating means for calculating the information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means, wherein said second index mark includes at least three points on the circumference of the same circle.

Claim 10

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark positioned substantially on an optic axis and a second index mark positioned around the optic axis; an imaging optical system for re-imaging the cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second image marks; and calculating means for calculating the information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means, wherein said second index mark includes at least three points on the circumference of the same circle.

Claim 11

An ophthalmic apparatus according to claim 8, wherein said second index mark includes four point sources of light provided in two meridian directions orthogonal to each other.

Claim 12

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark positioned substantially on an optic axis and a second index mark positioned around the optic axis; an imaging optical system for re-imaging the cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second image marks; and calculating means for calculating the information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means, wherein said second index mark includes at least three points which are not on the circumference of the same circle, and said calculating means stores in advance the position of the reflected image on a spherical surface for calibration.

Claim 13

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark positioned substantially on an optic axis and a second index mark positioned around the optic axis; an imaging optical system for re-imaging the cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second image marks; and calculating means for calculating the information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means, wherein said second index mark includes at least three points which are not on the circumference of the same circle, and said calculating means stores in advance the position of the reflected image on a spherical surface for calibration.

Claim 14

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark positioned substantially on an optic axis and a second index mark positioned around the optic axis; an imaging optical system for re-imaging the cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second image marks; and calculating means for calculating the information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means, wherein said second index mark includes at least two points, and said calculating means calculates the deflection vector of the cornea-reflected image of said second index mark with the position information of the reflected image of said second index mark on a predetermined spherical surface as the reference.

Claim 15

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark positioned substantially on an optic axis and a second index mark positioned around the optic axis; an imaging optical system for re-imaging the cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second image marks; and calculating means for calculating the information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means, wherein said second index mark includes at least two points, and said calculating means calculates the deflection vector of the cornea-reflected image of said second index mark with the position information of the reflected image of said second index mark on a predetermined spherical surface as the reference.

Claim 16

An ophthalmic apparatus comprising: a first index mark, attached to said apparatus, positioned substantially on an optic axis and adapted to be projected onto the fundus of an eye to be examined; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined.

Claim 17

An ophthalmic apparatus comprising: a first index mark, attached to said apparatus, positioned substantially on an optic axis and adapted to be projected onto the fundus of an eye to be examined; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined.

Claim 18

An ophthalmic apparatus according to claim 12, wherein said second index mark is a ring-shaped light source.

Claim 19

An ophthalmic apparatus according to claim 12, wherein said first and second index marks are infrared light sources.

Claim 20

An ophthalmic apparatus according to claim 12, wherein said second measuring means has a two-dimensional image pickup element.

Claim 21

An ophthalmic apparatus according to claim 12, wherein said second measuring means has a plurality of one-dimensional charged coupled devices.

Claim 22

An ophthalmic apparatus comprising: a first index mark, attached to said apparatus, positioned substantially on an optic axis and adapted to be projected onto the fundus of an eye to be examined; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined, wherein said second index mark includes at least three points on the circumference of the same circle.

Claim 23

An ophthalmic apparatus comprising: a first index mark, attached to said apparatus, positioned substantially on an optic axis and adapted to be projected onto the fundus of an eye to be examined; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined, wherein said second index mark includes at least three points on the circumference of the same circle.

Claim 24

An ophthalmic apparatus according to claim 17, wherein said second index mark includes four point sources of light provided in two meridian directions orthogonal to each other.

Claim 25

An ophthalmic apparatus comprising: a first index mark, attached to said apparatus, positioned substantially on an optic axis and adapted to be projected onto the fundus of an eye to be examined; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined, wherein said second index mark includes at least three points which are not on the circumference of the same circle, and said second measuring means stores in advance the position of the reflected image on a spherical surface for calibration.

Claim 26

An ophthalmic apparatus comprising: a first index mark, attached to said apparatus, positioned substantially on an optic axis and adapted to be projected onto the fundus of an eye to be examined; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined, wherein said second index mark includes at least three points which are not on the circumference of the same circle, and said second measuring means stores in advance the position of the reflected image on a spherical surface for calibration.

Claim 27

An ophthalmic apparatus comprising: a first index mark, attached to said apparatus, positioned substantially on an optic axis and adapted to be projected onto the fundus of an eye to be examined; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined, wherein said second index mark includes at least two points, and said second measuring means determines the deflection vector of the cornea-reflected image of said second index mark with the position information of the reflected image of said second index mark on a predetermined spherical surface as the reference.

Claim 28

An ophthalmic apparatus comprising: a first index mark, attached to said apparatus, positioned substantially on an optic axis and adapted to be projected onto the fundus of an eye to be examined; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined, wherein said second index mark includes at least two points, and said second measuring means determines the deflection vector of the cornea-reflected image of said second index mark with the position information of the reflected image of said second index mark on a predetermined spherical surface as the reference.

Claim 29

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark and a second index mark, said second index mark being positioned around an optic axis; an imaging optical system for re-imaging cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second index marks, wherein said cornea-reflected image of said first index mark indicates information of the position of the optic axis relative to the cornea on said light position detecting means; and calculating means for calculating information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means.

Claim 30

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark and a second index mark, said second index mark being positioned around an optic axis; an imaging optical system for re-imaging cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second index marks, wherein said cornea-reflected image of said first index mark indicates information of the position of the optic axis relative to the cornea on said light position detecting means; and calculating means for calculating information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means.

Claim 31

An ophthalmic apparatus according to claim 21, wherein said first index mark is a light source which comprises an alignment light source.

Claim 32

An ophthalmic apparatus according to claim 21, wherein said first index mark is a light source comprising a fixation light source.

Claim 33

An ophthalmic apparatus according to claim 21, wherein said second index mark is a ring-shaped light source.

Claim 34

An ophthalmic apparatus according to claim 21, wherein said first and second index marks are infrared light sources.

Claim 35

An ophthalmic apparatus according to claim 21, wherein said light position detecting means is a two-dimensional image pickup element.

Claim 36

An ophthalmic apparatus according to claim 21, wherein said light position detecting means is a plurality of one-dimensional charged coupled devices.

Claim 37

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark and a second index mark, said second index mark being positioned around an optic axis; an imaging optical system for re-imaging cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second index marks, wherein said cornea-reflected image of said first index mark indicates information of the position of the optic axis relative to the cornea on said light position detecting means; and calculating means for calculating information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means, wherein said second index mark includes at least three points on the circumference of the same circle.

Claim 38

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark and a second index mark, said second index mark being positioned around an optic axis; an imaging optical system for re-imaging cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second index marks, wherein said cornea-reflected image of said first index mark indicates information of the position of the optic axis relative to the cornea on said light position detecting means; and calculating means for calculating information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means, wherein said second index mark includes at least three points on the circumference of the same circle.

Claim 39

An ophthalmic apparatus according to claim 28, wherein said second index mark includes four point sources of light provided in two meridian directions orthogonal to each other.

Claim 40

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark and a second index mark, said second index mark being positioned around an optic axis; an imaging optical system for re-imaging cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second index marks, wherein said cornea-reflected image of said first index mark indicates information of the position of the optic axis relative to the cornea on said light position detecting means; and calculating means for calculating information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means, wherein said second index mark includes at least three points which are not on the circumference of the same circle, and said calculating means stores in advance the position of the reflected image on a spherical surface for calibration.

Claim 41

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark and a second index mark, said second index mark being positioned around an optic axis; an imaging optical system for re-imaging cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second index marks, wherein said cornea-reflected image of said first index mark indicates information of the position of the optic axis relative to the cornea on said light position detecting means; and calculating means for calculating information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means, wherein said second index mark includes at least three points which are not on the circumference of the same circle, and said calculating means stores in advance the position of the reflected image on a spherical surface for calibration.

Claim 42

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark and a second index mark, said second index mark being positioned around an optic axis; an imaging optical system for re-imaging cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second index marks, wherein said cornea-reflected image of said first index mark indicates information of the position of the optic axis relative to the cornea on said light position detecting means; and calculating means for calculating information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means, wherein said second index mark includes at least two points, and said calculating means calculates the deflection vector of the cornea-reflected image of said second index mark with the position information of the reflected image of said second index mark on a predetermined spherical surface as the reference.

Claim 43

An ophthalmic apparatus capable of measuring the shape of a cornea, comprising: an index mark adapted to be projected onto the cornea of an eye to be examined, said index mark being provided with a first index mark and a second index mark, said second index mark being positioned around an optic axis; an imaging optical system for re-imaging cornea-reflected images of said first and second index marks; light position detecting means provided at the image plane position of said imaging optical system for detecting the position of the cornea-reflected images of said first and second index marks, wherein said cornea-reflected image of said first index mark indicates information of the position of the optic axis relative to the cornea on said light position detecting means; and calculating means for calculating information of the shape of the cornea based on the position information of the cornea-reflected image of both said first index mark and said second index mark detected by said light position detecting means, wherein said second index mark includes at least two points, and said calculating means calculates the deflection vector of the cornea-reflected image of said second index mark with the position information of the reflected image of said second index mark on a predetermined spherical surface as the reference.

Claim 44

An ophthalmic apparatus comprising: a first index mark, attached to said apparatus, adapted to be projected onto the fundus of an eye to be examined, said first index mark being positioned so that a cornea-reflected image of said first index mark indicates information of the position of an optic axis relative to the cornea; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving an eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined.

Claim 45

An ophthalmic apparatus comprising: a first index mark, attached to said apparatus, adapted to be projected onto the fundus of an eye to be examined, said first index mark being positioned so that a cornea-reflected image of said first index mark indicates information of the position of an optic axis relative to the cornea; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving an eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined.

Claim 46

An ophthalmic apparatus according to claim 32, wherein said second index mark is a ring-shaped light source.

Claim 47

An ophthalmic apparatus according to claim 32, wherein said first and second index marks are infrared light sources.

Claim 48

An ophthalmic apparatus according to claim 32, wherein said second measuring means has a two-dimensional image pickup element.

Claim 49

An ophthalmic apparatus according to claim 32, wherein said second measuring means has a plurality of one-dimensional charged coupled devices.

Claim 50

An ophthalmic apparatus, comprising: a first index mark, attached to said apparatus, adapted to be projected onto the fundus of an eye to be examined, said first index mark being positioned so that a cornea-reflected image of said first index mark indicates information of the position of an optic axis relative to the cornea; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined, wherein said second index mark includes at least three points on the circumference of the same circle.

Claim 51

An ophthalmic apparatus, comprising: a first index mark, attached to said apparatus, adapted to be projected onto the fundus of an eye to be examined, said first index mark being positioned so that a cornea-reflected image of said first index mark indicates information of the position of an optic axis relative to the cornea; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined, wherein said second index mark includes at least three points on the circumference of the same circle.

Claim 52

An ophthalmic apparatus according to claim 37, wherein said second index mark includes four point sources of light provided in two meridian directions orthogonal to each other.

Claim 53

An ophthalmic apparatus, comprising: a first index mark, attached to said apparatus, adapted to be projected onto the fundus of an eye to be examined, said first index mark being positioned so that a cornea-reflected image of said first index mark indicates information of the position of an optic axis relative to the cornea; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined, wherein said second index mark includes at least three points which are not on the circumference of the same circle, and said second measuring means stores in advance the position of the reflected image on a spherical surface for calibration.

Claim 54

An ophthalmic apparatus, comprising: a first index mark, attached to said apparatus, adapted to be projected onto the fundus of an eye to be examined, said first index mark being positioned so that a cornea-reflected image of said first index mark indicates information of the position of an optic axis relative to the cornea; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined, wherein said second index mark includes at least three points which are not on the circumference of the same circle, and said second measuring means stores in advance the position of the reflected image on a spherical surface for calibration.

Claim 55

An ophthalmic apparatus, comprising: a first index mark, attached to said apparatus, adapted to be projected onto the fundus of an eye to be examined, said first index mark being positioned so that a cornea-reflected image of said first index mark indicates information of the position of an optic axis relative to the cornea; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined, wherein said second index mark includes at least two points, and said second measuring means determines the deflection vector of the cornea-reflected image of said second index mark with the position information of the reflected image of said second index mark on a predetermined spherical surface as the reference.

Claim 56

An ophthalmic apparatus, comprising: a first index mark, attached to said apparatus, adapted to be projected onto the fundus of an eye to be examined, said first index mark being positioned so that a cornea-reflected image of said first index mark indicates information of the position of an optic axis relative to the cornea; a second index mark, attached to said apparatus, positioned around the optic axis and adapted to be projected onto the cornea of the eye to be examined; first measuring means, attached to said apparatus, for receiving the eye-fundus-reflected image light of said first index mark and for measuring the eye refractive power of the eye to be examined; and second measuring means, attached to said apparatus, for receiving the cornea-reflected image lights of both said first and second index marks and for measuring the shape of the cornea of the eye to be examined, wherein said second index mark includes at least two points, and said second measuring means determines the deflection vector of the cornea-reflected image of said second index mark with the position information of the reflected image of said second index mark on a predetermined spherical surface as the reference.