 ACULAR Ketorolac eye drop is a member of nonsteroidal anti-inflammatory drugs NSAIDs available for toipcal ocular use. ACULAR acts as prostaglandin inhibitor and as such decrease prostaglandin E2 production. An increase in prostaglandin production has been associated with various inflammatory eye disease.For instance ACULAR has been shown to be effective in preventing the post cataract surgery inflammation that result in macular edema in adults. Activation of the prostaglandin cascade has been demonstrated in animal models of ROP. A previous non randomized study using ACULAR for ROP prevention has shown a possible beneficial effect and no observed adverse effect. To clearly demonstrated and confirm this finding a randomized study is thus necessary before one can advocate its use for prevention of ROP.The medication is FDA approved in pediatrics for allergic conjunctivitis and post surgical ocular inflammation. 