METHOD AND APPARATUS FOR CORRECTING VISION USING AN ELECTRO-ACTIVE PHOROPTER

摘要

An electro-active phoropter (200) and a method of using the electro-active phoropter to measure a patient~s vision prescription is disclosed. The elect ro- active phoropter includes a series of individually addressable electro-activ e lenses (220, 230). The lenses have either a positive or negative power when an electrical potential is applied across the lens and a neutral optical power when no electrical potential is applied across the lens. Each lens provides an optical power that is part of a net optical power of the series of lenses wh en a patient views through the phoropter. The optical power of the phoropter ca n be incrementally adjusted by changing the distribution of the electrical potential across the different lenses of the series to provide increasing or decreasing optical power until a patient achieves a desired level of clarity and a vision prescription has been determined.