Apparatus for modelling ocular structures

Abstract

An imaging system for an optical element, the imaging system comprising means for illuminating a targeted optical element with at least one incident light beam and means for directing at least two light beams returning from at least one surface of the illuminated optical element onto a detector; the detector adapted to measure relative light characteristics of the at least two returning light beams and to calculate at least one parameter of the optical element using the measured characteristics of the at least two returning light beams.

Description

technical field [0001] The present invention relates to eye modeling. Background technique [0002] Eye surgery typically modifies one or more structures of the eye, such as the cornea, lens, or retina. Some surgeries involve removing or replacing one or more eye structures, or adding a graft. For example, lens replacement surgery involves removing a patient's existing lens and replacing it with a new lens. Some procedures, such as laser vision correction surgery, do not remove or replace a patient's existing structures, or add implants in the eye, but reshape existing structures. Regardless of the modification made (eg, removal, replacement, insertion, or remodeling), the optical properties of the eye are altered by the adjustments made to the structure of the eye. It is therefore necessary to determine the ocular parameters of the eye in order to accurately model any eye structure. These parameters include shape, thickness, and refractive index of ocular structures suc...

AI Technical Summary

Problems solved by technology

Failure to resolve the refractive index leads to errors in all measurements beyond the first optical surface (cornea)

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