WATERTOWN, Mass.--(BUSINESS WIRE)--pSivida Corp. (NASDAQ:PSDV)(ASX:PVA)(FWB:PV3), a leading drug delivery company that has developed two of the only three products approved by the FDA for the long term, sustained release delivery of drug to treat chronic back of the eye disease, today announced that enrollment has begun for a pilot study to assess the safety and efficacy of Iluvien® in patients with macular edema secondary to retinal vein occlusion. The trial is being sponsored by pSivida’s licensee, Alimera Sciences of Alpharetta, Georgia.