Usually, vision declines slowly with age, but the sudden loss of vision is more related to habits and diseases.
Six reasons for sudden loss of vision are summarized.
- Staring at a screen all day.
The survey found that most people spend a good 400 minutes a day staring at their computers, smartphones and televisions.
Studies show that people blink nearly 70 percent less during this period. Blinking too little can cause sore and stinging eyes.
At the same time, reading on a screen makes it harder for the eyes to work, because digital graphics are made up of tiny dots and are not as clear as the physical characters on a printed page.
Over time, it will cause readers to suffer from "digital eye strain", resulting in decreased vision and blurred vision.
- Wearing contact lenses for too long.
The longer you wear your contact lenses, the more dust, mucus, proteins and minerals build up on the lenses.
In addition to causing blurred vision, these gunks can also cause damage to the eyes, such as dry and irritated eyes.
An easy way to test this is to remove your contact lenses and put on your glasses.
If your vision becomes clear, your lenses need to be cleaned or replaced.
In the hot summer and the spring with more wind and sand, it is best to wear contact lenses less.
- Corneal abrasion.
It is often caused by trauma, and the symptoms are blurred vision, redness and swelling, or foreign body sensation in the eye.
Minor wear and tear should heal on its own within a few days. In more severe cases, antibiotic eye drops may be prescribed to prevent infection, or steroid eye drops to reduce inflammation and scarring, which can lead to permanent vision loss.
- Getting pregnant.
Changes in visual function, such as blurry vision and double vision, are more common during pregnancy.
This is because changes in the amount of hormones secreted in the body will cause changes in the fluid behind the cornea, changing the shape and thickness of the cornea, forming a transient myopia or myopia, which can not return to normal until after childbirth.
Therefore, during pregnancy and one month after childbirth, you should pay attention to eye habits and let your eyes get a full rest.
Hormonal changes caused by oral contraceptives and hormone replacement therapy may also affect vision.
In addition, certain diseases, such as rheumatoid arthritis and diabetes, can also increase this risk.
- You take certain medications.
Antihistamines, blood pressure medications, or antidepressants can cause eye strain, dry eyes, and blurry vision because they slow down tear production or change its composition, causing it 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 drug program.
- You have glaucoma.
This disease is like an "invisible killer", the early symptoms are not obvious, but the attack on the eyes is quite powerful, when the vision changes, many people have permanently lost part of the visual function.
Glaucoma is not just a "patent" for the elderly, any age group is at risk. People over 40 years old, with a family history of glaucoma, diabetes, high blood pressure, and high myopia are all at high risk for glaucoma.
Therefore, it is important to have regular eye exams. People between the ages of 18 and 60 should be tested at least every two years, and people over the age of 60 should be tested annually.
