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Low Vision Assessment and Rehabilitation

Initial Low Vision Assessment

Central Visual Field Testing

The purpose of the Amsler grid test is to plot areas of significant visual loss within the central 20° of the visual field. It encompasses the area of the retina providing fine detail. The test is undertaken at 30 cm (1/3 meter) with the opposite eye closed. Reading glasses or bifocals are used, if appropriate. The patient fixates only on the central spot of the Amsler grid card and reports the absence and/or distortion of the surrounding straight lines of the grid pattern, and draws out their approximate limits.

Dr. Cole recorded an area of vision loss centrally in his right eye extending inferiorly and toward his nose. With his left eye, his central field was essentially normal.