Multi-focal intraocular lens system and methods for dynamic visual environments

摘要

The invention pertains to methods, components, and operations of multi-focal intraocular lens systems, including range finding for driving same and for discriminating between multiple objects and varying brightness conditions. The invention also pertains to intraocular photosensors and range-finding methods to be used with intra-ocular lens systems, and components, that provide multi-focal IOL capabilities in dynamic visual environments.

主权项

1. A method for taking into account pupil size changes due to respective variations in ambient brightness when determining changes in distance to an object of regard based on pupil size measurements, comprising:
discriminating between a pupilary brightness reflex and a synkinetic reflex using an intraocular photo sensor and a processor to measure and estimate a pupil size, a light intensity, a change in a the light intensity, and a degree of ocular convergence; and estimating a distance to an object of regard based on said discriminating.