Viagra generic name is sildenafil tablets, and eye hazards include blurred vision, increased tearing, and altered color vision. Additionally, adverse effects such as angina and low blood pressure can occur when taking sildenafil tablets. Sildenafil tablets are mainly used to treat erectile dysfunction. However, some patients taking sildenafil tablets may experience blurred vision, increased tearing, altered color vision, conjunctivitis, eye pain, and visual field loss. Some patients may also experience retinal vein occlusion, vision loss, non-arteritic anterior ischemic optic neuropathy, retinal artery occlusion, and permanent blindness in severe cases. Sildenafil tablets taken in addition to possible harm to the eyes, but also may occur angina, hypotension, facial edema, fatigue, myocardial infarction, syncope, palpitations (rapid heartbeat, often accompanied by panic), dysphagia, esophagitis, gastritis, epigastric pain, dyspnea, pharyngitis, and other adverse reactions. It is recommended that sildenafil tablets can be taken under the guidance of a doctor, for sildenafil tablets ingredients allergic to the drug is prohibited, women and people under 18 years of age can not take the drug.