Early versus late intravitreal triamcinolone acetonide for macular edema associated with branch retinal vein occlusion.

A few studies on patients with branch retinal vein occlusion (BRVO) have suggested that intravitreal corticosteroid can reduce macular edema and increase visual acuity.1-3 However, these studies did not evaluate the effectiveness of triamcinolone with respect to the timing of the intravitreal injection. In addition, follow-up periods were inadequate or patients who had undergone multiple injections of intravitreal triamcinolone or combined treatment with laser photocoagulation were included. The purpose of this study was to directly compare the effect of an early versus a late intravitreal triamcinolone as a primary treatment for macular edema due to BRVO.