Case 6-2. Non-Proliferative Diabetic Retinopathy
A 62-year-old man was examined approximately two months after focal laser photocoagulation treatment for background diabetic retinopathy and clinically significant macular edema in both eyes. Fundus examination (A) of his right eye, which had a visual acuity of 20/100, revealed scattered dot and blot hemorrhages throughout the macula, hard exudate, and laser scars.
A vertical OCT image (B) through the macula showed a diffuse increase in retinal thickness and loss of the normal foveal contour consistent with macular edema. The retinal thickness measured in the fovea was 460 \Am. A follow-up OCT examination (C) four months later showed a slight reduction in macular thickening to 380 um. The decreased edema correlated with an improvement in visual acuity to 20/70.
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