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[Visual course for proliferative diabetic retinopathy after pars plana vitrectomy]
1Department of Ophthalmology, Saiseikai Niigata Daini Hospital, 280-7 Terachi, Niigata-shi 950-1104, Japan.
Purpose:
To investigate retrospectively the visual course for proliferative diabetic retinopathy after pars plana vitrectomy.
Cases And Methods:
From January 2002 to December 2004, we operated 209 eyes with proliferative diabetic retinopathy. For this study, we selected 28 eyes in which the visual acuity could be followed for 6 months or longer after the vitrectomy.
Result:
The mean time period for reaching the best visual acuity after vitrectomy was 14.7 +/- 12.0 months. Depending on the type of diabetic maculopathy, the ischemic type, deposit type, and cystoid macular edema type required a mean time of 16 approximately 19 months. For the diffuse edema type, the mean was 9 months. It is significant that vitrectomy with triamcinolone acetonide (TA) resulted in visual improvement earlier than vitrectmy without TA (p value = 0.03).
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