Gnad H D, Freyler H, Klemen U M, Radda T M
Klin Monbl Augenheilkd. 1981 Dec;179(6):508-11. doi: 10.1055/s-2008-1057378.
Report on 82 consecutive cases in which pars plana vitrectomy was performed because of intravitreal hemorrhage. Postoperative follow-up ranged from 3 to 4 1/2 years. Although an incipient improvement of the visual acuity was achieved in 54%, recurrent hemorrhages as well as progression of the proliferative diabetic retinopathy lead to visual deterioration of blindness in 64% of the eyes.