METHOD AND DEVICE FOR MEASURING WAVE ABERRATIONS OF HUMAN EYE Russian patent published in 2005 - IPC

FIELD: medical equipment.

SUBSTANCE: method and device can be used for optometric inspection of vision as well as for high quality laser correction of vision. According to the method, eye of patient is probed with narrow beam of laser radiation and inclination of wave front of radiation returning from the eye is measured by means of Hartman-Sheck detector in sub-apertures. During process of measurement dosed inclinations are introduced into wave front within limits of angular distance between adjacent apertures. Procedure of measurement is repeated several times and any subsequent measurement is followed by inclination of the whole beam. Wave front is subject to re-construction by the data received at all the angular positions of beam. Device for realization of the method has probe channel, measuring channel and positioning channel. To control wave front, the wave front dosed inclination unit is introduced into the device on the base of acoustic-optic deflector which has to be the component of measuring channel according to the first version of the device and probing channel - according to the other version.

EFFECT: widened dynamic range of measured wave aberrations of human eye.

3 cl, 27 dwg