DEVICE FOR ELIMINATION OF SPECKLE-MODULATION EFFECT IN MEASUREMENT OF EYE ABERRATIONS BY LASER ABERROMETRE AND LASER ABERROMETRE Russian patent published in 2011 - IPC A61B3/10 

FIELD: medicine.

SUBSTANCE: group of inventions relates to medical equipment, namely, laser aberrometres and devices for elimination of speckle-modulation effect in measurement of eye aberrations by laser aberrometres. Device contains transparent plate and drive. Plate is located between point source and human eye. Drive ensures plate movement in direction, transverse to direction of point source direction. Plate surface is made in form of random two-dimensional profile, whose characteristic size is smaller than laser beam diameter. Laser aberrometre contains said device, system of changing shape of wave front of irradiation outgoing from eye in form of wave front sensor, and system of laser aberrometre control. Control system contains computer for processing data obtained from wave front sensor, restoration of map of eye aberrations, data storage and laser aberrometre control.

EFFECT: application of group of inventions will make it possible to increase accuracy of measuring eye aberrations due to temporary averaging of speckle-modulation for time of matrix photodetector integration.

3 cl, 3 dwg