Alcohol in wine can easily stimulate the optic nerve and lower the optic nerve conduction which can causes the decrease of sensitivity. The stimulation of alcohol will lead to congestion and edema, often resulting in visual distortion. In addition, drinking too much can easily interfere the body absorption and utilization of various vitamins, but increase the consumption of vitamins. Vitamin A is needful nutrients for the retina. If the vitamin A is decreased, the vision will be decreased. Some people are very sensitive to alcohol. Although they drink little alcohol, there may be occurrence of adverse reactions happened on them, especially those who suffer from conjunctivitis, trachoma, iritis, keratitis, myopia, strabismus, can make their body condition worse while drinking.