Purpose: To investigate the effect of intravitreal triamcinolone acetonide (TA) on aqueous humor levels of vascular endothelial growth factor (VEGF), soluble intercellular adhesion molecule 1 (sICAM-1), and pigment epithelium-derived factor (PEDF) in patients with central retinal vein occlusion (CRVO) and macular edema.
Methods: We measured VEGF, sICAM-1, and PEDF levels in aqueous humor samples from 2 eyes of 2 CRVO patients during injection of TA.
Results: In both patients, the VEGF and sICAM-1 levels in aqueous humor samples obtained during initial injection of TA were higher than at the time of reinjection. Conversely, the initial PEDF levels were lower than those at reinjection.
Conclusions: Aqueous humor levels of VEGF and sICAM-1 were decreased by TA treatment in 2 CRVO patients, while PEDF was increased. Intravitreal TA could be an option for CRVO patients with a low PEDF level and/or moderate VEGF and sICAM-1 levels.
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