Retinal Physician: The authors cite a case report of a branch retinal artery occlusion two hours after taking Viagra. A twist is that the patient flew on an airplane the next day- emboli from deep vein thrombosis therefore may have been a contributing factor. Earlier reports cited ischemic optic neuropathy- this is the first time a retinal branch occlusion has been described. Bottom line- who in their right mind is going to give up Viagra because of a very small risk like this? Nobody.