Cone and rod function in cone degenerations
نویسندگان
چکیده
منابع مشابه
Cone and rod function in cone degenerations
Progressive cone dystrophy (CD) is usually marked in the initial stages by reduced visual acuity, color vision deficiency and alterations in the photopic electroretinogram, while morphological alterations can be very mild; in some forms rods are affected in a later stage as well. We examined 40 patients with progressive cone dystrophy to determine the extent of functional losses in the cone sys...
متن کاملLocal cone and rod system function in progressive cone dystrophy.
PURPOSE To compare the patterns of local cone and rod system impairment in patients with progressive cone dystrophy (CD) using psychophysical and electrophysiological techniques. METHODS Local cone system function was assessed by measuring cone system thresholds (visual fields) and cone-mediated multifocal electroretinograms (mfERGs). Rod system function was assessed by measuring rod system t...
متن کاملRod and cone photoreceptor function in patients with cone dystrophy.
PURPOSE To determine the extent of rod and cone photoreceptor dysfunction in patients with cone dystrophy using psychophysical and electrophysiological tests. METHODS Ten patients with cone dystrophy participated. Rod and cone system psychophysical thresholds were measured as a function of retinal eccentricity. Bright-flash full-field electroretinograms were obtained under dark-adapted (rod-m...
متن کاملVisual acuity changes in cone and cone-rod dystrophies.
PURPOSE The purpose of the study was to evaluate longitudinal visual acuity (VA) changes in cone (CD) and cone-rod dystrophies (CRD) in order to develop recommendations for follow-up strategies and to define an optimal time for potential therapeutic intervention. METHODS Patients with clinically defined CD and CRD, who had at least three clinical examinations within a follow-up period of a mi...
متن کاملWide-field fundus autofluorescence abnormalities and visual function in patients with cone and cone-rod dystrophies.
PURPOSE To evaluate the clinical utility of wide-field fundus autofluorescence (FAF) in patients with cone dystrophy and cone-rod dystrophy. METHODS Sixteen patients with cone dystrophy (CD) and 41 patients with cone-rod dystrophy (CRD) were recruited at one institution. The right eye of each patient was included for analysis. We obtained wide-field FAF images using a ultra-widefield retinal ...
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ژورنال
عنوان ژورنال: Vision Research
سال: 1997
ISSN: 0042-6989
DOI: 10.1016/s0042-6989(97)00025-4