Detecting retinal lesions with automated perimetry
1988; Taylor & Francis; Volume: 71; Issue: 1 Linguagem: Inglês
10.1111/j.1444-0938.1988.tb03742.x
ISSN1444-0938
AutoresAlgis J. Vingrys, Susan C. Benes, P. Ewen King‐Smith,
Tópico(s)Retinal and Optic Conditions
ResumoThis paper considers the clinical problems associated with the detection of localized retinal lesions using automated perimeters. We present four case studies of patients who had documented macular lesions, some about the size of the papilla, but who had normal visual field results when tested with automated perimeters using central threshold programs. Three factors were identified that limit an automated perimeter in detecting a lesion. These are: 1. misalignment between the test grid and lesion, 2. subject threshold fluctuations and, 3. inappropriate use of grey scales. Several strategies such as the use of sectional cuts or fine grids, the use of a simple statistical analysis or the use of the Amsler grid can be adopted by a clinician to prevent an inappropriate diagnosis being made on a single visual field examination. Static perimetry
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