Cataracts are getting younger! Is using a cell phone in the dark a murderer? Doctors say there are "three major factors" that are more dangerous
Eat cod liver oil to supplement “vitamin A”? Are there any adverse effects of eating too much?
Cod liver oil can protect your eyes. Is there any problem if you consume too much? Dr. Chen Yuan, Director of the Ophthalmology Department of New Taipei City Hospital , said that the vitamin A in cod liver oil is one of the main components of “rhodopsin”, a special light-sensitive substance in retinal cells. Rhodopsin can enhance the body’s sensitivity to adapt to dark and low light and improve an individual’s “color discrimination.” If there is a problem with rhodopsin, the body may be unable to obtain good vision at night, which is clinically called “night blindness.” These patients need to take vitamin A to improve their night blindness symptoms.
Dr. Chen Yu’an explained that some patients are unable to effectively utilize vitamin A due to congenital genetic defects, causing retinal cells to lose function. They may also suffer from acquired malnutrition and not taking in enough nutrients in daily life, causing eye disease. Under normal circumstances, you can take appropriate amounts of cod liver oil to supplement the nutrients needed by your eyes.
However, Dr. Chen Yuan reminded that although cod liver oil, animal offal and other foods are rich in vitamin A, excessive consumption of health foods may put a burden on the body and even cause poisoning. Doctors remind that the daily intake limit of vitamin A for adults should not exceed 3,000 micrograms.
Pregnant women should be careful not to take too much vitamin A. If expectant mothers have any concerns, they can consult an obstetrician and gynecologist or nutritionist before making dietary adjustments.
How many eye mines have you hit? Do anti-blue light products work?
Modern people spend more time using their eyes and often use luminous products in dark places, which may cause vision damage. Dr. Chen Yuan said that when a person is in a dark place, the pupils will dilate, making it easier for light to penetrate into the macular area. Using laptops, mobile phones, and tablets in dark places will cause damage to your eyes several times higher than usual. In addition, many people like to use mobile phones while walking, and looking at luminous products with shaky images can also put a strain on their eyes and increase the chance of suffering from astigmatism.
To prevent eye damage caused by blue light, many people buy “anti-blue light” products. Are they effective for eye protection? Dr. Chen Yu’an explained that the human body’s crystalline lens has the function of filtering blue light and anti-UV. If your eyes are not exposed to excessive ultraviolet rays and your eye habits are correct, you don’t actually need the assistance of anti-blue light products. Doctors emphasize that using anti-blue light products does not mean that your eyes will not be damaged. It is fundamental to develop correct eye use habits and avoid overuse of your eyes.
Will looking too close to a mobile phone cause glaucoma? Are cataracts more common in young people?
Dr. Chen Yuan explained that among the eye diseases of young people, glaucoma is more related to congenital genes and family inheritance. But cataracts do tend to appear younger. If you have a history of diabetes, high myopia, kidney dialysis, etc., the “crystal” structure in your eyes is prone to clouding, and your eye health is worse than that of ordinary people. If you have poor habits, often stare at the screen for long periods of time, or use mobile phones in dark places , may indeed cause cataracts to occur in young adults.
Dr. Chen Yuan reminds people who are used to using their eyes for long periods of time to pay attention to eye health, take in adequate nutrition, and take appropriate rest during daily work and use of electronic products to avoid increasing the chance of cataracts and even having to replace the artificial lens early.
