Original ArticlesOne-year outcomes of panretinal photocoagulation in proliferative diabetic retinopathy☆
Section snippets
Patients and methods
We identified a cohort of patients’ eyes treated with initial panretinal photocoagulation at the Scheie Eye Institute from 1985 through 1995 and followed up for at least 1 year. Candidate patients and eyes were obtained from a registry of diagnostic codes, maintained by the retina service, of patients who were diagnosed with proliferative diabetic retinopathy. Eyes of patients were identified that met the following criteria: proliferative diabetic retinopathy treated with panretinal
Results
Charts were obtained and reviewed for 530 patients. Of the reviewed charts, 261 patients (49%) did not meet the criteria for the study. One hundred forty-three patients (27%) never underwent panretinal photocoagulation at the Scheie Eye Institute, 82 patients (15%) underwent previous panretinal photocoagulation at another institution, and 36 patients (7%) had panretinal photocoagulation before 1985. Among the remaining 269 eligible patients, 83 patients (31%) underwent their initial panretinal
Discussion
The study data document that 30 eyes (10%) underwent a vitrectomy within 1 year of initial panretinal photocoagulation treatment, approximately twice the Early Treatment Diabetic Retinopathy Study 5-year cumulative rate of pars plana vitrectomy of 5.3%.16 Our data most likely differ from Early Treatment Diabetic Retinopathy Study data because of the difference in eye status at the time of initial panretinal photocoagulation. The eligibility criteria of the Early Treatment Diabetic Retinopathy
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This study was supported in part by National Eye Institute grant R21 EY10964, National Institutes of Health, Bethesda, Maryland, and an unrestricted grant from Research to Prevent Blindness, Inc, New York, New York.