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Patent US5357294A successfully refreshed from Google Patents.
US5357294A
Expired / Lapsed
US
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Method for displaying optical properties of corneas
Assignee: Individual
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Filing: 1993-07-09
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Granted: 1994-10-18
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Expires: 2013-07-09
Abstract
Abstract A method for visually representing for easy analysis the relations between a plurality of cornea-operated patients' tendencies over time to astigmatism on the one hand, and the surgical techniques employed in the operations on the other. A plurality of diopter data matrices are generated about the multiple corneas having different conditions. An arithmetic mean value of each of the components constituting the data matrices is calculated so as to prepare a mean value matrix. A standard deviation of each of the components is calculated using the mean value matrix and the data matrices so as to prepare a standard deviation matrix. The mean value matrix and the standard deviation matrix are displayed in relevant positions on a cornea map using any of color pallets and graphic patterns associated with the arithmetic mean value and standard deviation of the components.
Inventors
- 👤 Kimiya Shimizu
- 👤 Shunichi Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:17
CPC Classifications
G; G16; G16H; G16H15/00; G16H50/00; G16H50/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
176 words
In a method for displaying optical properties of corneas comprising the steps of: establishing a cornea map by dividing a cornea of a three-dimensional shape into a plurality of minute areas in a predetermined coordinate system; establishing a pseudo-two-dimensional position matrix corresponding to said minute areas and made of a plurality of components; having a cornea analyzer measure the optical properties of said minute areas to generate data matrices corresponding to the components constituting the position matrix; and displaying said data matrices in relevant positions on said cornea map using any of color pallets and graphic patterns associated with the data values involved; the improvement comprising the steps of: generating a plurality of data matrices about a plurality of corneas having different conditions; calculating an arithmetic mean value of each of the components constituting said data matrices so as to prepare a mean value matrix; and displaying said mean value matrix in relevant position on said cornea map using any of color pallets and graphic patterns associated with the mean value of each of said components.
Claim 2
Dependent Claim
176 words
In a method for displaying optical properties of corneas comprising the steps of: establishing a cornea map by dividing a cornea of a three-dimensional shape into a plurality of minute areas in a predetermined coordinate system; establishing a pseudo-two-dimensional position matrix corresponding to said minute areas and made of a plurality of components; having a cornea analyzer measure the optical properties of said minute areas to generate data matrices corresponding to the components constituting the position matrix; and displaying said data matrices in relevant positions on said cornea map using any of color pallets and graphic patterns associated with the data values involved; the improvement comprising the steps of: generating a plurality of data matrices about a plurality of corneas having different conditions; calculating an arithmetic mean value of each of the components constituting said data matrices so as to prepare a mean value matrix; and displaying said mean value matrix in relevant position on said cornea map using any of color pallets and graphic patterns associated with the mean value of each of said components.
Claim 3
Dependent Claim
202 words
In a method for displaying optical properties of corneas comprising the steps of: establishing a cornea map by dividing a cornea of a three-dimensional shape into a plurality of minute areas in a predetermined coordinate system; establishing a pseudo-two-dimensional position matrix corresponding to said minute areas and made of a plurality of components; having a cornea analyzer measure the optical properties of said minute areas to generate data matrices corresponding to the components constituting the position matrix; and displaying said data matrices in relevant positions on said cornea map using any of color pallets and graphic patterns associated with the data values involved; the improvement comprising the steps of: generating a plurality of data matrices about a plurality of corneas having different conditions; calculating an arithmetic mean value of each of the components constituting said data matrices so as to prepare a mean value matrix; calculating a standard deviation of each of said components using said mean value matrix and said data matrices so as to prepare a standard deviation matrix; and displaying said standard deviation matrix in relevant positions on said cornea map using any of color pallets and graphic patterns associated with the standard deviation of each of said components.
Claim 4
Dependent Claim
202 words
In a method for displaying optical properties of corneas comprising the steps of: establishing a cornea map by dividing a cornea of a three-dimensional shape into a plurality of minute areas in a predetermined coordinate system; establishing a pseudo-two-dimensional position matrix corresponding to said minute areas and made of a plurality of components; having a cornea analyzer measure the optical properties of said minute areas to generate data matrices corresponding to the components constituting the position matrix; and displaying said data matrices in relevant positions on said cornea map using any of color pallets and graphic patterns associated with the data values involved; the improvement comprising the steps of: generating a plurality of data matrices about a plurality of corneas having different conditions; calculating an arithmetic mean value of each of the components constituting said data matrices so as to prepare a mean value matrix; calculating a standard deviation of each of said components using said mean value matrix and said data matrices so as to prepare a standard deviation matrix; and displaying said standard deviation matrix in relevant positions on said cornea map using any of color pallets and graphic patterns associated with the standard deviation of each of said components.
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) | 1997-10-17 | 1998-04-18 | 1998-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-17 | 2002-04-18 | 2002-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-17 | 2006-04-18 | 2006-10-18 | $7700.00 | Window Closed / Lapsed |