Fast Recovery of the Amblyopic Eye Acuity of Kittens following Brief Exposure to Total Darkness Depends on the Fellow Eye

Figure 1

The grating acuity of the two eyes of 3 monocularly deprived kittens immediately prior to and following a 10-day period spent in complete darkness. Each kitten received a 7-day period of MD starting at P30 days and were placed in darkness at either P91 days (C446) or at P102 days (C439, C422). As with subsequent figures, the visual histories and acuity data in the graphs below for the deprived eye (DE) and nondeprived eye (NDE) are depicted in orange and green, respectively. Occlusion of the DE during the early period of MD is shown by crosshatching, and the subsequent period of total darkness is indicated in black. The results of acuity measurements for the 3 animals are depicted by symbols as follows: C422 upright triangles, C446 plus symbols or solid circles (NDE), and C439 inverted triangles. The results of binocular measurements of acuity are shown as open green symbols while monocular measurements of the acuity of the nondeprived eye acuity with which they are equivalent are shown as solid green symbols.