A Study of Denufosol Tetrasodium Intravitreal Injection in Subjects With Post Cataract Extraction Macular Edema

Inclusion Criteria: * Have persistent post cataract extraction macular edema whose condition is stable * Have no change in medication regimen of immunosuppressive or anti-inflammatory agents; steroidal or non-steroidal agents for a specified period of time prior to randomization * Have at least one eligible eye to be treated in the study * Have an optical coherence tomography (OCT) scan with a qualifying retinal thickness in the study eye * Have macular edema confirmed by fluorescein angiography Exclusion Criteria: * Have proliferative vitreoretinopathy greater than grade B in either eye * Have ocular disorders in the study eye that may confound interpretation of study results * Have ophthalmic disorders in the study eye that may influence final visual acuity and/or fluorescein angiography interpretation * Have had cataract surgery in the study eye in the past 2 months, YAG laser capsulotomy within the past 1 month, or any other intraocular surgery within the past 90 days * Have uncontrollable elevated intraocular pressure (IOP) or advanced glaucoma * Have had any periocular or intravitreal injection of corticosteroids in the study eye within 3 months * Have had any ocular implant device for the delivery of therapeutic agents * Be taking any excluded medications that could obscure or confound study results