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Ozurdex Ozurdex is a biodegradable implant that contains demaxethasone. It is an intravitreal implant that delivers a sustained release of demaxaethasone (700ml) to the retina and vitreous humour. Ozurdex can improve visual acuity and macular thickness. It is used to treat macular edema, Retinal vein occlusion and non-infectious uveitis (posterior). Ozurdex is made using a solid biodegradable polymer. This polymer is composed of an apolylactic acid-co-glycolic acid (PLGA) matrix. This dissolves completely in vivo. The products of this are lactic acid and glycolic acid, which are converted into Carbon dioxide and Water. Figure Z : Implant on day 3 (A) and day 180 (B)