Normal and amblyopic contrast sensitivity function in central and peripheral retinas.
Contrast sensitivity functions (CSF's) for temporally modulated sine wave gratings were established at a variety of retinal eccentricities in three esotropic amblyopes with acuities in their amblyopic eyes of 20/50, 20/100, and 20/300. CSF's were shown to vary with eccentricity and the degree of amblyopia. In the 20/50 amblyope, reduced CSF's were confined to the higher spatial frequencies and to the central 5 degrees of the retina. Given greater acuity deficits (e.g., 20/100 and 20/300), CSF's were depressed over the entire spatial frequency range tested, with the effects intruding farther into the peripheral retina than for the 20/50 amblyope. In addition, the detection of the temporal as well as the spatial modulation was depressed in the CSF's of the observers with severe amblyopia.
D000328:Adult; D000550:Amblyopia / Q000150:complications / Q000503:physiopathology*; D005556:Form Perception; D006801:Humans; D008027:Light; D012160:Retina / Q000503:physiopathology; D013285:Strabismus / Q000150:complications / Q000503:physiopathology*; D014792:Visual Acuity; D014794:Visual Fields