Pinto, Lancelot MMorekar, SunilMahashur, Ashok A2012-05-302012-05-302009-10Pinto Lancelot M, Morekar Sunil, Mahashur Ashok A. Central retinal vein occlusion in a patient after being commenced on sildenafil citrate for pulmonary arterial hypertension. The Indian Journal of Chest Diseases and Allied Sciences, 2009 Oct; 51(4): 249-252.http://imsear.searo.who.int/handle/123456789/138756A 75-year-old female was commenced on sildenafil for the treatment of pulmonary arterial hypertension (PAH) secondary to chronic obstructive pulmonary disease (COPD). She reported blurring of vision within 72 hours after starting treatment and was found to have a central retinal vein occlusion (CRVO). Such an occurrence is the second case reported to date, and we review the possible mechanisms and literature on the subject.enSildenafilCentral retinal vein occlusion3',5'-Cyclic-GMP Phosphodiesterases --antagonists & inhibitorsAgedDiagnosis, DifferentialFemaleHumansHypertension, Pulmonary --drug therapyPhosphodiesterase Inhibitors --adverse effectsPhosphodiesterase Inhibitors --therapeutic usePiperazines --adverse effectsPiperazines --therapeutic usePurines --adverse effectsPurines --therapeutic useRetinal Vein Occlusion --chemically inducedRetinal Vein Occlusion --diagnosisSulfones --adverse effectsSulfones --therapeutic useArticle