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Two-Year Results of a Randomized Trial Diabetic Retinopathy Vitrectomy Study Report 2 The Diabetic Retinopathy Vitrectomy Study Research Group

Arch Ophthalmol. 1985;103(11):1644-1652.

Abstract
• Six hundred sixteen eyes with recent severe diabetic vitreous hemorrhage reducing visual acuity to 5/200 or less for at least one month were randomly assigned to either early vitrectomy or deferral of vitrectomy for one year. After two years of follow-up, 25% of the early vitrectomy group had visual acuity of 10/20 or better compared with 15% in the deferral group (P =.01). In patients with Type I diabetes, who were on the average younger and had more-severe proliferative retinopathy, there was a clear-cut advantage for early vitrectomy, as reflected in the percentage of eyes recovering visual acuity of 10/20 or better (36% vs 12% in the deferral group, P =.0001). No such advantage was found in the Type II diabetes group (16% in the early group vs 18% in the deferral group), but evidence that this advantage differed by diabetes type was of borderline significance.

Footnotes
Accepted for publication Sept 13, 1985.

A complete listing of the participants in this research study appears at the end of this article.

Reprint requests to the National Eye Institute, Bldg 31, Room 6A-10, 9000 Rockville Pike, Bethesda, MD 20014.

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