It is necessary to advise people who have a fondness for sugar, tobacco, and alcohol that when you suffer from a certain eye disease and a decline in vision, you should try to control this habit as much as possible to prevent the eye disease from worsening, because your fondness for sweets, smoking, and excessive alcohol consumption will all affect your vision.
The effect of sugar on vision. Since the metabolism of sugar in the body requires a large amount of vitamin B1 and reduces the calcium content in the body, a deficiency of vitamin B2 can worsen the degree of myopia, and a decrease in calcium will weaken the elasticity of the eyeball wall, promoting the development of myopia.
The effect of tobacco on vision. According to research, cigarette smoke contains more than 750 chemical components, many of which are toxic. Through animal experiments and observations of clinical patients, these toxic substances can directly affect the metabolic function of ocular tissues, leading to painless, progressive vision loss and color vision impairment in both eyes. For long-term smokers, especially those who smoke heavily, the persistent smoking can cause retinal vascular ischemia, which in turn leads to vision decline.
The effect of alcohol on vision. Excessive drinking can also damage the eyes. This is because after drinking heavily, the effect of alcohol accelerates blood circulation throughout the body, often causing the eyeballs to become congested and red, damaging the retina, and causing "alcoholic amblyopia." For people with diabetes and hypertension, drinking can also lead to bleeding in the fundus of the eye, which can lead to a decrease in vision in mild cases and blindness in severe cases. On the other hand, long-term excessive drinking, especially frequent heavy consumption of strong liquor, can cause a decline in digestive and absorption functions, leading to a deficiency of B vitamins in the body. This can result in diseases such as conjunctivitis and optic neuritis, leading to visual impairment and changes in the visual field.