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Proliferative retinopathy: value of the oscillatory potentials.

Oscillatory potentials (OPs) and retinal fluorescein angiography (RFA) were performed in 45 patients with diabetes mellitus. OPs were normal in 28 patients, altered (increased latencies and or inter-peak times) but with normal shape in 9, changes in morphology in 8: none of these patients had normal RFA, 2 had no proliferative retinopathy, 6 proliferative retinopathy (PR). In the authors' opinion OP changes in morphology are nearly always caused by a serious diabetic retinopathy, often by a PR. The authors emphasize the usefulness of OPs for studying the neurophysiologic properties of the retina of diabetic patients, particularly in PR.