The focal electroretinogram in the clinical assessment of macular disease.
Focal electroretinograms (ERGs) were obtained from the fovea in 142 eyes with a variety of macular diseases and 50 age-matched eyes with acuity loss in which macular disease was ruled out. Across all eyes, the accuracy rate of discriminating macular disease from other causes of acuity loss was 87%. Among all eyes with macular disease, the sensitivity rate of the focal ERG to the presence of macular disease was 85%. Log focal ERG amplitude was significantly correlated with log Snellen acuity, except in those eyes with macular holes. The sensitivity rate increased to 94% when eyes with 20/40 or greater acuity and eyes with macular holes were excluded.
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Texas Retina Associates, Dallas 75231.
Birch
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D000328:Adult; D004596:Electroretinography; D006801:Humans; D008266:Macula Lutea; D008875:Middle Aged; D012164:Retinal Diseases / Q000175:diagnosis*; D012167:Retinal Perforations / Q000175:diagnosis; D012680:Sensitivity and Specificity; D014786:Vision Disorders / Q000503:physiopathology; D014787:Vision Tests; D014792:Visual Acuity