PURPOSE: : To study the effect of an intravitreal bevacizumab (IVB) on the retinal ischemia in eyes with a branch retinal vein occlusion. METHODS: : Fluorescein angiography was performed before and 1 month after the IVB (1.25 mg/0.05 mL) in 58 consecutive eyes of 58 patients with macular edema secondary to a branch retinal vein occlusion. The area of capillary nonperfusion was measured on an early-phase fluorescein angiography image by an area measurement program, and the area was expressed relative to the optic disk area (DA). A blockage of the fluorescence by the retinal hemorrhage was distinguished from nonperfusion by comparisons with retinal photographs. RESULTS: : Thirty-seven of 58 eyes did not have any capillary nonperfusion before the IVB, and capillary nonperfusion developed in 3 of these 37 eyes 1 month after the IVB. The area of nonperfusion in these 3 eyes was 0.13, 0.47, and 0.60 DA. Twenty-one of the 58 eyes had capillary nonperfusion before the IVB, and the mean (±SD) area of nonperfusion was 3.45 ± 4.66 DA before the IVB and 3.45 ± 5.19 DA 1 month after the IVB. This change was not significant (P = 0.36). An increase in the area of capillary nonperfusion of >1.0 DA after the IVB was seen in only 1 of all 58 eyes. CONCLUSION: : These results suggest that the incidence of a significant increase in the area of capillary nonperfusion (>1 DA) during the 1 month after the IVB is very low in eyes with branch retinal vein occlusion.
PURPOSE: : To study the effect of an intravitreal bevacizumab (IVB) on the retinal ischemia in eyes with a branch retinal vein occlusion. METHODS: : Fluorescein angiography was performed before and 1 month after the IVB (1.25 mg/0.05 mL) in 58 consecutive eyes of 58 patients with macular edema secondary to a branch retinal vein occlusion. The area of capillary nonperfusion was measured on an early-phase fluorescein angiography image by an area measurement program, and the area was expressed relative to the optic disk area (DA). A blockage of the fluorescence by the retinal hemorrhage was distinguished from nonperfusion by comparisons with retinal photographs. RESULTS: : Thirty-seven of 58 eyes did not have any capillary nonperfusion before the IVB, and capillary nonperfusion developed in 3 of these 37 eyes 1 month after the IVB. The area of nonperfusion in these 3 eyes was 0.13, 0.47, and 0.60 DA. Twenty-one of the 58 eyes had capillary nonperfusion before the IVB, and the mean (±SD) area of nonperfusion was 3.45 ± 4.66 DA before the IVB and 3.45 ± 5.19 DA 1 month after the IVB. This change was not significant (P = 0.36). An increase in the area of capillary nonperfusion of >1.0 DA after the IVB was seen in only 1 of all 58 eyes. CONCLUSION: : These results suggest that the incidence of a significant increase in the area of capillary nonperfusion (>1 DA) during the 1 month after the IVB is very low in eyes with branch retinal vein occlusion.
Authors: Ahmed Roshdy Alagorie; Muneeswar Gupta Nittala; Swetha Velaga; Brenda Zhou; Alexander M Rusakevich; Charles C Wykoff; SriniVas R Sadda Journal: JAMA Ophthalmol Date: 2020-08-01 Impact factor: 7.389
Authors: S Schnichels; M Blak; J Hurst; T Dorfi; K U Bartz-Schmidt; F Ziemssen; M S Spitzer; M Schultheiss Journal: Biol Open Date: 2017-07-15 Impact factor: 2.422
Authors: Amy S Babiuch; Thais F Conti; Felipe F Conti; Fabiana Q Silva; Aleksandra Rachitskaya; Alex Yuan; Rishi P Singh Journal: Int J Retina Vitreous Date: 2019-07-23
Authors: Nikolaus Feucht; Etienne Michael Schönbach; Ines Lanzl; Konstantin Kotliar; Chris Patrick Lohmann; Mathias Maier Journal: Clin Ophthalmol Date: 2013-01-18