30. Simulated Image Contrast Enhancement by Aspheric Correction “ Aspheric IOLs emulate the young crystalline lens, whose negative spherical aberration tends to compensate positive spherical aberration of the cornea.”
As we get older, we lose contrast sensitivity, first at the higher spatial frequencies, then for all the spatial frequencies. Our patients need regular checkups that include contrast sensitivity testing to monitor and assess the changes in their vision.
MESSAGE: We used the NDS system designed by Dr. Ginsburg. This system was validated against detection and identification distances from published Dept. of Transportation Data. Ginsburg A, Kelly M; Functional vision testing: night driving simulator studies (1995) ASCRS ASOA Symposium of Cataract, IOL and Refractive Surgery, San Diego, California, April 1-5, 1995.