Patent ID: 7407285
Filing Date: 2008-08-05
Classification: A61B,A61F

Abstract:
1. An ophthalmic adaptive-optics instrument for obtaining patient-verified prescription of low and high-order aberrations, comprising: an observation target disposed for a subject eye to fixate upon; an aberration-compensating element disposed in the observation path of said subject eye, wherein said aberration-compensating element is driven by a control signal and is capable of compensating low and high-order aberrations of said subject eye; a wavefront-sensing device sensing the aberration of said subject eye via said aberration-compensating element, wherein said wavefront-sensing device measures a residual aberration of said subject eye through said aberration-compensating element with controllable aberration compensation; processing electronics coupled to said wavefront-sensing device and accepting a command signal to generate said control signal to drive said aberration-compensating element; and subjective feedback control means enabling the patient to actively produce said command signal to adjust said aberration-compensating element and to verify the amount of aberration compensation for optimal visual acuity; wherein said ophthalmic adaptive-optics instrument can measure the total aberration of said subject eye, corresponding to a null command signal, and the residual aberration for optimal visual acuity, corresponding to a command signal for optimal visual acuity; and wherein said ophthalmic adaptive-optics instrument provides, by subtracting said residual aberration for optimal visual acuity from said total aberration, said patient-verified prescription of low and high-order aberrations.