Changes in areas of capillary nonperfusion after intravitreal injection of bevacizumab in eyes with branch retinal vein occlusion

Takayuki Terui, Mineo Kondo, Tadasu Sugita, Yasuki Ito, Nagako Kondo, Ichiro Ota, Kensaku Miyake, Hiroko Terasaki

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26 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1068-1074
Number of pages7
JournalRetina
Volume31
Issue number6
DOIs
Publication statusPublished - 06-2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ophthalmology

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