Process and apparatus for examining the visual funcions of the eye

Process for examining the visual functions of the eye, which comprises determining with the help of test images the visual function of the eye, then inducing photostress by illuminating the eye with an intense light, and measuring the time needed for the recovery of the visual function before the illumination further comprising using periodically moving test images for the examination, and determining the visual function on the basis of detecting the phenomenon of optokinetic nystagmus.

Process for examining the visual function of the eye which comprises determining the visual function of the eye, then inducing photostress by illuminating the eye with an intense light and measuring the time needed for the recovery of the visual function before the illumination further comprising using for the determination of the visual function measuring of critical fusion frequency (CFF) before and after the photostress.

Apparatus for examining the visual features of the eye which comprises a light source (1) suitable for illuminating a test image and inducing photostress, a test image that can be illuminated with the light source, an optical device projecting the light of the light source and/or the picture of the test image into the eye and a clock measuring the time of the examination, the apparatus further having a test unit (3) suitable for moving and changing test images and a measuring unit (6) electrically connected to the test unit (3), which measuring unit (6) contains a nystagometer (61) sensing the movement of the eye and a display unit (62) and time measuring unit (63) connected to it.

Apparatus as claimed is claim 3 characterised by that the test unit (3) is constructed as a light source vibrating with variable frequency.