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Abstract #6733 Published in IGR 4-1
Video color perimetry: impairment in glaucoma suspects
Accornero N; Capozza M; De Feo A; Rinalduzzi S; De Marinis M; Pecori Giraldi J; Mollicone A; Volante VDocumenta Ophthalmologica 2001; 103: 81-90
PURPOSE: To detect mild visual field impairment in asymptomatic glaucoma suspect patients. METHODS: Color perception within the visual field was tested with customized color video perimetry. The key features of the system were stimuli color desaturation, low-level luminance and equiluminant gray background. Twenty patients with asymptomatic glaucoma were tested and compared with a group of age-matched control subjects. RESULTS: Automated perimetry test findings differed significantly in the two groups, particularly for short-wavelength sensitivity (blue). The severity of color impairment correlated directly with intraocular pressure. CONCLUSIONS: Desaturated low-luminance video perimetry will reliably detect and quantify asymptomatic visual field defects. A previous work on multiple sclerosis has detected a mild long-wavelength (red) impairment in asymptomatic patients after an episode of optic neuritis, even in clinically unaffected fellow eyes. The authors' findings in glaucoma suspect patients indicate that a mild blue impairment could be the initial sign of this disease.
Dr. N. Accornero, Dipartimento di Science Neurologiche, University of Rome La Sapienza, Italy. naccornero@uniromal.it
Classification:
6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (Part of: 6 Clinical examination methods > 6.6 Visual field examination and other visual function tests)
