American journal of ophthalmology
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A newly designed visual field testing instrument may be used either binocularly, as a quick screening test, or uniocularly, for plotting field defects. During binocular testing, the patient views a single target light at various points in the binocular central field. ⋯ Further analysis of the fields is then tested uniocularly. The instrument is simply constructed, yet should provide the means for assessing visual fields quickly and accurately.