To the Editor.
—I was very disappointed to read the expedited publication concerning early vitrectomy in the November 1985 issue of the Archives. Because of poor experimental design and reporting, this article will further the trend toward unnecessary vitrectomy in diabetics. This concern is highlighted by the fact that at least one third of the deferral group never required vitrectomy and the incidence of a visual acuity of no light perception was higher in the early treatment group.The follow-up mandated of these patients (3, 6, 12, 18, 24, 36, and 48 months) provides substandard care and biases the study in favor of the early group. It has been my practice for a decade to see such patients every three months or more frequently if there is significant traction. Ultrasonography, if the retina is not visible, should be performed at each visit to prevent long-term nonoperated retinal detachments. Iatrogenic detachments
Charles S. Diabetic Retinopathy Vitrectomy Study. Arch Ophthalmol. 1986;104(4):486. doi:10.1001/archopht.1986.01050160038003