Patent US8743272B2 successfully refreshed from Google Patents.
Patent US5652640A successfully refreshed from Google Patents.
US5652640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vision simulating apparatus and method
Assignee: Individual
•
Filing: 1996-04-17
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Granted: 1997-07-29
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Expires: 2016-04-17
Abstract
Abstract The invention includes apparatus and methods for evaluating vision through an intraocular lens. An image passes through a cornea, an intraocular lens, and a fovea window that are in a collinear array. In addition, the apparatus can include a human eye model, a fovea projector, and readable targets. The apparatus can be used to evaluate the vision of a subject through an intraocular lens such as a monofocal or bifocal intraocular lens. The ability of the subject to focus on one or more images at the fovea window provides information for evaluation of the subject's ability to see through an intraocular lens. Through movement of the fovea window or the intraocular lens dimensions or geometric constants of the subject's eye can be determined. The apparatus can also be used to evaluate vision through a bifocal cornea.
Inventors
- 👤 Richard T. Schneider
- 👤 Richard H. Keates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:53
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61B; A61B3/00; A61B3/0016; A61B3/0025; G; G09; G09B; G09B23/00; G09B23/28; A61F2/1662; A61F2240/00; A61F2240/001; A61F2240/008; A61F9/00
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
83 words
A vision simulating apparatus comprising: a basin with a chamber for holding liquid; a cornea mount for holding a cornea and allowing light to enter the basin; an intraocular lens holder positioned in the chamber; and a fovea window allowing light to exit the basin wherein the cornea mount, the intraocular lens holder and the fovea window are arranged such that light entering the basin at the cornea mount passes through the intraocular lens holder before leaving the basin at the fovea window.
Claim 2
Dependent Claim
83 words
A vision simulating apparatus comprising: a basin with a chamber for holding liquid; a cornea mount for holding a cornea and allowing light to enter the basin; an intraocular lens holder positioned in the chamber; and a fovea window allowing light to exit the basin wherein the cornea mount, the intraocular lens holder and the fovea window are arranged such that light entering the basin at the cornea mount passes through the intraocular lens holder before leaving the basin at the fovea window.
Claim 3
Dependent Claim
27 words
The apparatus of claim 1 further comprising an iris cap mounted between the intraocular lens holder and the cornea mount, the iris cap defining a central aperture.
Claim 4
Dependent Claim
24 words
The apparatus of claim 2 comprising a variable iris cap defining the central aperture wherein a diameter of the central aperture can be varied.
Claim 5
Dependent Claim
31 words
The apparatus of claim 1 further comprising a fovea projector including an objective lens, and an eyepiece oriented such that light entering through the fovea window is detectable at the eyepiece.
Claim 6
Dependent Claim
20 words
The apparatus of claim 1 further comprising an intraocular lens in the intraocular lens holder and liquid in the basin.
Claim 7
Dependent Claim
27 words
The apparatus of claim 5 further comprising a plurality of intraocular lenses each having different optical powers, each intraocular lens successively positionable in the intraocular lens holder.
Claim 8
Dependent Claim
14 words
The apparatus of claim 5 further comprising a cornea mounted to the cornea mount.
Claim 9
Dependent Claim
24 words
The apparatus of claim 7 further comprising a plurality of corneas each having different optical powers, each cornea successively mountable to the cornea mount.
Claim 10
Dependent Claim
17 words
The apparatus of claim 1 further comprising a bifocal intraocular lens mounted to the intraocular lens holder.
Claim 11
Dependent Claim
15 words
The apparatus of claim 1 further comprising a bifocal cornea mounted to the cornea mount.
Claim 12
Dependent Claim
26 words
The apparatus of claim 10 wherein the bifocal cornea includes a portion positioned off-axis and having a power different from a remainder of the bifocal cornea.
Claim 13
Dependent Claim
29 words
The apparatus of claim 1 further comprising a moveable bellows mounted to the basin and the fovea window, wherein the fovea window is movably mounted relative to the basin.
Claim 14
Dependent Claim
33 words
The apparatus of claim 1 further comprising a moveable shaft mounted to the basin, the fovea window mounted to the shaft, and further comprising a shaft seal between the shaft and the basin.
Claim 15
Dependent Claim
41 words
The apparatus of claim 1 further comprising a control mechanism, wherein the intraocular lens holder is mounted to the control mechanism to move the intraocular lens holder relative to the basin on an x-axis, a z-axis and about an angle theta.
Claim 16
Dependent Claim
19 words
The apparatus of claim 14 further comprising a position sensor for sensing a position of the intraocular lens holder.
Claim 17
Dependent Claim
62 words
The apparatus of claim 1 wherein the basin, the cornea mount, and the intraocular lens holder are components of an eye model that is mounted on a fovea projector having an eyepiece; and further comprising a target box with a moveable target; wherein the target is in the field of view from the eyepiece of the fovea projector through the eye model.
Claim 18
Dependent Claim
21 words
The apparatus of claim 1 further comprising a camera positioned to receive the light leaving the basin at the fovea window.
Claim 19
Dependent Claim
13 words
The apparatus of claim 1 wherein the basin includes a pressurized sealed chamber.
Claim 20
Dependent Claim
12 words
The apparatus of claim 1 further comprising symbols on the fovea window.
Claim 21
Independent Claim
72 words
A method for simulating vision comprising the steps of: providing an eye model including a cornea, a cornea mount holding the cornea, an intraocular lens, an intraocular lens holder holding the intraocular lens, and a liquid filled basin; positioning the intraocular lens inside the basin; passing light from a first target through the cornea and then through the intraocular lens; and passing the light from the intraocular lens out of the basin.
Claim 22
Independent Claim
72 words
A method for simulating vision comprising the steps of: providing an eye model including a cornea, a cornea mount holding the cornea, an intraocular lens, an intraocular lens holder holding the intraocular lens, and a liquid filled basin; positioning the intraocular lens inside the basin; passing light from a first target through the cornea and then through the intraocular lens; and passing the light from the intraocular lens out of the basin.
Claim 23
Dependent Claim
24 words
The method of claim 20 further comprising the step of replacing the intraocular lens in the intraocular lens holder with a second intraocular lens.
Claim 24
Dependent Claim
17 words
The method of claim 20 further comprising the step of replacing the cornea with a second cornea.
Claim 25
Dependent Claim
18 words
The method of claim 20 wherein the intraocular lens projects more than one image of the first target.
Claim 26
Dependent Claim
17 words
The method of claim 20 wherein the cornea projects more than one image of the first target.
Claim 27
Dependent Claim
21 words
The method of claim 20 further comprising the step of changing the position of the intraocular lens relative to the basin.
Claim 28
Dependent Claim
38 words
The method of claim 20 further comprising the step of passing light from a second target at a different distance from the human eye model through the cornea, through the intraocular lens, and then out of the basin.
Claim 29
Dependent Claim
47 words
The method of claim 20 further comprising the steps of: providing a fovea window in the liquid filled basin; viewing symbols on the fovea window through the fovea window; and viewing the light from the first target through the cornea, the intraocular lens and the fovea window.
Claim 30
Dependent Claim
15 words
The method of claim 20 further comprising the step of pressurizing the liquid filled basin.
Claim 31
Dependent Claim
24 words
The method of claim 20 further comprising the step of recording an image of the light passing out of the basin with a camera.
Claim 32
Dependent Claim
12 words
The method of claim 20 wherein the cornea has about zero power.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-07-28 | 2001-01-27 | 2001-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-28 | 2005-01-27 | 2005-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-28 | 2009-01-27 | 2009-07-29 | $7700.00 | Window Closed / Lapsed |