Is One 60° Fundus Photograph Sufficient for Screening of Proliferative Diabetic Retinopathy?

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Abstract
OBJECTIVE—To compare one 60° fundus photograph to seven field stereo fundus photographs in identifying proliferative diabetic retinopathy. RESEARCH DESIGN AND METHODS—A total of 44 eyes in 23 patients with moderate/severe nonproliferative diabetic retinopathy were included. Evaluation of each eye was based on one 60° fundus photograph. Eyes were re-examined using seven field 30° stereo fundus photographs according to the protocol of the Early Treatment Diabetic Retinopathy Study, and the photographs were examined independently by three ophthalmologists to identify retinal neovascular lesions. In addition, fluorescein angiography was performed in all patients to verify the presence of the lesions. RESULTS—In four eyes of three patients (11.1% of eyes) evaluated based on seven field stereo photographs, retinal neovascularization was found. This condition was not found on examination of 60° fundus photographs. CONCLUSIONS—Examination of one 60° fundus photograph was found to be insufficient as a screening procedure in patients with moderate/severe nonproliferative diabetic retinopathy.