Incorrect posture and poor eye habits can harm our eyes, but many people don't know that some foods can also be harmful to our eyes. Let's take a look at three types of food that are harmful to the eyes.
Three Types of Food Harmful to the Eyes
1. Tobacco
According to research, tobacco 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. Furthermore, the latest research has found that smoking can lead to amblyopia. The amblyopia caused by smoking is called tobacco amblyopia, mainly characterized by decreased vision, narrowed field of vision, and difficulty distinguishing between red and green colors. Therefore, one should not only not smoke but also stay away from smoking environments.
2. Alcohol
Excessive alcohol consumption can also damage the eyes. This is because after drinking a lot of alcohol, the effect of alcohol speeds up blood circulation throughout the body, often causing eye congestion and damaging the retina, leading to "alcoholic amblyopia." For patients with diabetes or high blood pressure, drinking can also lead to bleeding in the fundus of the eye, which in mild cases can cause decreased vision and in severe cases can lead to blindness. In addition, long-term heavy drinking can lead to a decline in digestive and absorption functions, causing a deficiency of B vitamins in the body, which can lead to diseases such as conjunctivitis and optic neuritis.
3. Sugar
The metabolism of sugar in the body requires a large amount of vitamin B1 and reduces the body's calcium content. A deficiency of vitamin B1 can worsen the degree of myopia, while a decrease in calcium can weaken the elasticity of the eyeball wall and promote the progression of myopia, so it is advisable to eat less sugar.