Three intravitreal bevacizumab versus two intravitreal triamcinolone injections in recent onset central retinal vein occlusion

Alireza Ramezani, Hamed Esfandiari, Morteza Entezari, Siamak Moradian, Masoud Soheilian, Babak Dehsarvi, Mehdi Yaseri
Acta Ophthalmologica 2014, 92 (7): e530-9

PURPOSE: To evaluate the effects of repeated intravitreal injections of bevacizumab (IVB) versus triamcinolone acetonide (IVT) in the treatment of acute central retinal vein occlusion (CRVO).

METHODS: In this randomized clinical trial, 86 eyes with recent onset (<12 weeks) CRVO were assigned to two groups: IVB group (43 eyes) that received three monthly injections of 1.25 mg of IVB, and IVT group (43 eyes) that received two injections of 2 mg IVT 2 months apart. Outcomes were best-corrected visual acuity (BCVA), central macular thickness (CMT), and intraocular pressure (IOP) changes.

RESULTS: Mean BCVA improved significantly at 6 months in both groups; from 0.87 ± 0.49 to 0.41 ± 0.35 logMAR in IVB group, and from 0.81 ± 0.45 to 0.62 ± 0.48 logMAR in IVT group (p < 0.001). However, between-group differences reach a significant level at months 4 (p = 0.003) and 6 (p < 0.001) in favour of the IVB group. In terms of CMT reduction, the difference between the groups was statistically significant (p = 0.002) at month 6. Significant differences were noted more in the ischaemic cases in favour of the IVB group. Mean IOP rise was significantly higher in the IVT group at all visits.

CONCLUSIONS: Both 3-times monthly IVB injections and 2-times IVT injections could be effective in cases with recent onset CRVO up to 6 months. However, considering the better outcomes after IVB injections and the potential complications of IVT injections, we would recommend prescheduled repeated IVB injections for such cases. The observed favourable responses were more pronounced in the ischaemic types; nevertheless, this should be confirmed in larger studies.

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