老年黄斑变性的早期视功能变异

Early abnormalities of visual functions in aging macular degeneration

Visual functions in aging macular degeneration were observed by contrast sensitivity, color vision (FM 100-hue, Panel D-15), visual field (dynamic perimetry, suprathreshold static perimetry and static perimetry profile), with simultaneous recordings of pattern electroretinogram and pattern evoked potential. The results showed that even in AMD eyes with normal visual acuity, 34.0-79.1% had abnormal visual psychophysical function or electrophysiological measurements, suggesting that many abnormalities in visual function appeared in early AMD. The factors of abnormal early visual function changes in AMD were discussed.