title: Visual halos after sildenafil (Viagra).
authors: Michael J
authors: MJ
authors: Potter
authors: Darren
authors: D
authors: Behn
mesh_terms: D015106:3',5'-Cyclic-GMP Phosphodiesterases / Q000037:antagonists & inhibitors* / Q000172:deficiency; D000818:Animals; D004596:Electroretinography; D006801:Humans; D051379:Mice; D010726:Phosphodiesterase Inhibitors / Q000009:adverse effects*; D010879:Piperazines / Q000009:adverse effects*; D011687:Purines; D012160:Retina / Q000187:drug effects / Q000201:enzymology / Q000503:physiopathology; D000068677:Sildenafil Citrate; D013450:Sulfones; D014786:Vision Disorders / Q000139:chemically induced* / Q000201:enzymology / Q000503:physiopathology
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate; D015106:3',5'-Cyclic-GMP Phosphodiesterases