System for generating ablation profiles for laser refractive eye surgery
US6923802B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2002 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Dec 25, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2009/00882
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A laser eye surgery system and method include a laser for producing a laser beam capable of making refractive corrections, an optical system for shaping and conditioning the laser beam, a digital micromirror device (DMD) for reflecting the shaped and conditioned beam toward the eye, and a computer system for controlling the mirrors of the DMD. The computer system and methodology utilize a higher order polynomial equation to generate a smooth refraction correction profile and determines the coefficients for the higher order polynomial equation from preferably first-, second-, or third-order curves based on the correlation between the coefficients and the desired diopter correction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.