title: Sildenafil (Viagra) and ophthalmology.
authors: M F
authors: MF
authors: Marmor
mesh_terms: D015106:3',5'-Cyclic-GMP Phosphodiesterases / Q000037:antagonists & inhibitors*; D000818:Animals; D006801:Humans; D008297:Male; D009885:Ophthalmology; D010726:Phosphodiesterase Inhibitors / Q000009:adverse effects / Q000494:pharmacology*; D010879:Piperazines / Q000009:adverse effects / Q000494:pharmacology*; D011687:Purines; D012160:Retina / Q000187:drug effects / Q000201:enzymology; D000068677:Sildenafil Citrate; D013450:Sulfones
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate; D015106:3',5'-Cyclic-GMP Phosphodiesterases