OCT Guided Avastin Retreatment 

Yet another study reports good success using optical coherence tomography (OCT) as the basis for deciding whether to provide additional Avastin therapy in patients with neovascular age-related macular degeneration (AMD). Thirty-two patients with active subfoveal occult choroidal neovascularisation (CNV) in AMD received a single intravitreal injection of bevacizumab (Avastin) and were reinjected based on new or persisting subretinal or intraretinal fluid on OCT. Patient visits were every 6-8 weeks.After a single injection, 74% of patients demonstrated complete retinal fluid absorption, with 44% of patients showing no relapse during a follow-up of an avewrage of 30 weeks. Fifty-six percent of patients required a second injection after a mean of 19 weeks, with 82% of patients showing absorption of macular fluid thereafter with regain of their previous achieved best-corrected visual acuity .All patients achieved stabilisation of visual acuity during follow-up, with 30% of patients showing a significant gain of >/=3 lines of visual acuity.The researchers conclude that OCT-based reinjections of bevacizumab in neovascular AMD reduce the number of injections and lead to anatomic and functional retinal stabilisation.

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