The present study was designed to examine the relationship between the severity of retinopathy and general status 10 years after xenon photocoagulation was performed on 139 subjects (200 eyes) with proliferative retinopathy between June 1, 1971 and December 31, 1979. The immediate success rate after 6-12 months was 83.5%.
Sixty-eight patients (48.9%) were still coming to our hospital, 29 (20.9%) have died, and 42 (30.2%) have been lost to follow-up. The major causes of death were cerebrovascular accidents and cardiovascular disease, followed by renal failure and infection. Eighteen of the 42 patients who could not be followed up had been referred to local hospitals because of their physical disability, but the reason for the other drop-outs is unknown.
After 10 years the fundus findings had improved in 52 eyes (50%) of the 68 patients (104 eyes) available for the study, they were unchanged in 19 eyes (18.2%) and had deteriorated in 33 eyes (31.7%). Fifty five eyes (52.9%) exhibited non-proliferative retinopathy, 32 eyes (30.8%) proliferative retinopathy, and 17 eyes (16.3%) were blind.
Multiple regression analysis revealed that progression of retinopathy was significantly associated with poor glycemic control alone, all other factors (e. g., gender, age, duration of diabetes, body mass index, blood pressure, serum lipid levels and ischemic ECG changes) were insignificant.
These findings suggest that long-term glycemic control of diabetes is significantly related to the progression of retinopathy, even after photocoagulation.
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