What are the causes of vision decline in middle-aged and elderly people?

The survey found that most people spend 400 minutes staring at computers, smartphones and televisions every day. Studies have shown that during this period, the number of blinks will be reduced by nearly 70%. Blinking too few times can cause sore eyes. At the same time, reading on the screen will make your eyes work harder, because digital pictures and texts are made up of tiny dots, which are not as clear as physical characters on printed pages. Over time, readers will suffer from "digital eye fatigue", which will lead to decreased vision and blurred vision.

2. Wear contact lenses for too long.

The longer you wear contact lenses, the more dust, mucus, protein and minerals accumulate on the lenses. In addition to blurred vision, these sticky substances can also cause eye damage, such as dry eyes and inflammation and pain. A simple test method is to take off contact lenses and put on frame glasses. If the vision becomes clear, the contact lenses need to be cleaned or replaced. In hot summer and windy spring, it is best to wear less contact lenses.

3, corneal abrasion.

Usually caused by trauma, the symptoms are blurred vision, red eyes or foreign body sensation. In this case, you should see an ophthalmologist in time. A slight scratch will heal itself in a few days. If the condition is serious, the doctor will prescribe antibiotic eye drops to prevent infection or steroid eye drops to reduce inflammation and scar formation, which may lead to permanent vision loss.

4. Take some medicine.

Antihistamines, antihypertensive drugs or antidepressants may cause dry eyes and blurred vision, because they will slow down the production of tears, or change their composition, causing tears to evaporate too quickly. Generally, it will get better after stopping the drug. If the problem is serious, you need to find a doctor to adjust the medication plan.

5, got glaucoma.

This disease is like an "invisible killer". The early symptoms are not obvious, but the blow to the eyes is quite severe. When vision changes, many people have permanently lost some of their visual functions. Glaucoma is not only the "patent" of the elderly, but also the risk of onset at any age.

People over 40 years old, with family history of glaucoma, diabetes, hypertension and high myopia are all high-risk groups of glaucoma. Therefore, it is very important to check your eyes regularly. /kloc-people aged 0/8 ~ 60 should be examined at least once every two years, and people over 60 should be examined once a year.

Extended data

Misunderstanding of preventing computer eye injury

Myth 1: Radiation protection can protect your eyes.

The concept of radiation protection is well known to businesses. In fact, computer radiation is very small, which is very harmful to human body and eyes. You can search for "radiation" in Baidu Encyclopedia to learn more about computer radiation. The protective effect of radiation-proof glasses on eyes is limited. The most obvious sign is that after using the computer, the eyes will still be sour, hot, and even painful and tearful.

Myth 2: UV protection can protect your eyes.

Ultraviolet rays do cause damage to fundus cells, but the conjunctiva and lens of the eye can block and absorb most of the ultraviolet rays, and very little ultraviolet rays can really shine on the fundus. Many glasses can filter ultraviolet rays, but after wearing these glasses and using the computer for a long time, the eyes will still have discomfort symptoms such as acidity, fever and even pain. Therefore, anti-ultraviolet glasses can not completely protect the eyes.

Myth 3: Dimming the computer background light can reduce the damage to the eyes.

Although dimming the computer background light can reduce the stimulation of strong light, it can't reduce the stimulation of blue light to the eyes, so the eyes will still have various discomfort after a long time.

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People's Health Network-Three Mistakes in Preventing Computer Injury How to Prevent Vision Decline