Why can t I wear contact lenses for too long, and when should I not wear them?

The eyes also have to 'breathe', and if you block the air from your eyes with contact lenses, your eyes will turn red. It is easy to cause dry eye syndrome, and the main manifestations are visual fatigue, eye soreness and foreign body sensation, excessive eye feces, dryness, eye burning and even blurred vision.

The eyes are very dry when the contact lenses are brought up.

The eye is damaged by the pigment layer.

Narrowing the field of vision when the eye is looking at things.

Corneal hypoxia.

Contact lenses are not allowed to be worn in the following situations:

Clause. 1. When you are sick, do not wear contact lenses.

When you have a cold or fever, when you have eye diseases, or when you feel unwell, you should not wear contact lenses. Because at this time, the body's immunity is relatively low, and there will be a large number of germs or bacteria on the hands, which are not suitable for wearing when the eyes are dry and dry. In addition, taking anti-inflammatory drugs, antibiotics and other drugs can inhibit the secretion of tears, etc., and cause the eye environment to be too dry.

In the process of wearing contact lenses, it will absorb water from the eyes, causing retinal inflammation. Therefore, when you are unwell, do not wear contact lenses.

Clause. 2. Minors should not wear contact lenses.

The retina of minors has not yet fully grown, and there are many harmful substances in the contact lenses, and there are also precipitates on the pigment, so if the minors wear contact lenses, it will have a serious impact on the development of vision. If the visual axis of their eyes is not yet finalized, and the curvature of the lens and the corneal run-in are not adaptable, if they wear it too early or for too long, it will cause retinal damage, resulting in corneal hypoxia and slow physiological metabolism.

Clause. 3. Girls are not allowed to wear contact lenses during menstruation and pregnancy.

In the process of menstruation, the intraocular pressure of girls is relatively high, and the surrounding environment of the eyeball is easy to become congested when wearing, which will cause discomfort to the eyeball. During pregnancy, the water in the body changes, the eyes become swollen, and the cornea thickens. After the third trimester of pregnancy, the moisture of the eyes will increase, and the thickness of the cornea will also change, so when wearing contact lenses, it will be different from normal people, and you will feel obvious discomfort.

The ingredients of contact lenses are not good for pregnant women and children.

Clause. Fourth, it is not suitable to wear contact lenses in the process of cycling, swimming, sports, long-distance travel, etc.

Many girls will encounter a lot of problems in the process of exercising and long-distance travel, and there will also be a lot of bacteria breeding, so it is not suitable to wear contact lenses in these activities. In addition, there is a time limit for wearing contact lenses, so more than six or eight hours is particularly bad for the eyes.

When the eye is infected, you generally can't wear contact lenses, such as acute conjunctivitis, when the eyes are red and the discharge will increase, if you wear contact lenses, the infection will be aggravated.

It is not allowed to be worn when the eyes are inflamed. Or maybe there's some inflammation. If you wear contact lenses at this time, the damage to the cornea is really great.

It should not be worn when the eyes are inflamed, as wearing contact lenses at this time will aggravate the condition and sometimes lead to blindness.

How often to change contact lenses mainly depends on how long the contact lenses are used. The maximum wearing time is 8 hours for daily throwing, and the replacement is two weeks for bi-weekly throwing. It should be replaced in 25 days in a month, about 5 months in half a year, and about 10 months in an annual cycle.

Because the longer the use time, the greater the wear and tear of the lenses, and the greater the safety hazard, so the real use time of contact lenses should be shortened by about 20% compared with the specified time. Therefore, do not use a pair of contact lenses until the maximum use time is replaced, and replace them some time in advance, which is better for the health of the eyes.

The main thing about daily disposal is that it is clean and hygienic and convenient, and it does not need to be cared for when it is used up. Both monthly and annual sales are more suitable for people who wear contact lenses for a long time, with moderate water content and easy to wear, but the disadvantage is that they need to be cleaned for long-term use. Therefore, when purchasing, you can buy contact lenses according to the length of time you have been wearing them.

The correct way to wear contact lenses:

1. Wash your hands before wearing.

2. The general order of wearing is to use one finger to stretch the upper eyelid and pull the lower eyelid down.

3. Open your eyes wide, buckle the front of the contact lenses on your eyes, and then turn your eyes to make the contacts more attached to the cornea.

4. When wearing, the action must be gentle to avoid scratching the eyes.

5. Patients who wear contact lenses must pay attention to eye hygiene.