Ocular Pneumoplethysmography

Abstract

To determine the accuracy of ocular pneumoplethysmography (OPG-Gee) is detecting carotid arterial occlusive disease, 350 patients were tested by OPG-Gee. Patients (63) underwent angiography and the findings were correlated with the results of OPG-Gee tracings. Testing without carotid compression averaged 3 min and was easily performed by a physician or technician. No significant complications occurred. Hypertension did not affect evaluation. Two false-negative tests and no false-positive tests occurred. Without carotid compression the overall accuracy for detecting significant arterial stenosis was 97%. When a carotid compression test was added, 2 missed lesions were detected.