Myopia is a major health problem that plagues modern people. There are still only three ways to solve it: frame glasses, contact lenses, and surgical correction.
Among them, wearing contact lenses can solve vision problems without affecting appearance, and is the preferred solution for many young people.
but! If you often wear contact lenses, do you feel dry eyes, foreign body sensation, swollen eyes, and occasional dizziness...
If you are uncomfortable, don't "bear it"!
In fact, whether it is a veteran or a newcomer, there are still many knowledge blind spots in the matter of contact lenses.
Wearing contact lenses should pay attention to [occasion]
For people who use contact lenses for a long time, the protective effect of the biological barrier on the ocular surface will be relatively weak. Swimming, bathing and other activities are not recommended when wearing them to avoid contamination of the lenses.
At the same time, dry environments such as air-conditioned rooms and barbecue areas may cause the lenses themselves to be easily dehydrated and dry, causing eye discomfort. But you can also rest assured that all lens materials will generally not melt at these ambient temperatures.
Some people need to wear contact lenses with caution
During pregnancy, endocrine changes occur, the secretion of tears is relatively small, and the resistance is poor. Once infected, it is not suitable for medication. Therefore, it is generally not recommended to wear glasses.
When you are in a disease state such as a cold and fever, your immunity is low and the risk of infection is increased, so it is best to stop wearing glasses.
If you suffer from severe dry eye, acute conjunctivitis, eyelid inflammation, keratitis, etc., you need to cure the disease before using contact lenses
Having noticed both of the above, why is it still uncomfortable?
Many myopic friends wear contact lenses for a long time, and often feel that their eyes are swollen and foggy, but most of them have not taken any measures, but choose to "forget it"...
In fact, this is the distress signal sent by the eyes: the eyes are hypoxic.
Oxygen permeability is a necessary condition for corneal metabolism. The cornea itself has no blood vessels, and the oxygen supply of epithelial cells mainly comes from the tear film. The lenses of soft contact lenses are generally larger than the diameter of the cornea and fully cover the cornea, which requires the lens to have a certain oxygen permeability, otherwise it will cause hypoxia of the corneal tissue.
The longer the contact lens is worn, the oxygen permeability of the lens will decrease accordingly, to a certain extent, corneal hypoxia can be induced in a short time, resulting in corneal edema and discomfort. If the hypoxia is not recovered for too long, it will even further cause eye redness and dryness, and may also induce more serious eye diseases such as corneal inflammation and eye infection.
When wearing contact lenses, keep these things in mind:
1. The glasses should go to a professional optometry institution, and choose contact lenses under the guidance of an optometrist. People with a history of drug or cosmetic allergies should be especially vigilant.
2. Choose lenses with good air permeability. Replace lenses in time. Even if the lens has not expired, as long as there has been contamination such as protein precipitation, or the lens is deformed and discolored, the lens should be replaced immediately.
3. Avoid wearing contact lenses overnight. Wear it for no more than 8 hours a day, alternately with spectacles. Do not wear contact lenses when swimming.
4. Maintain good hygiene habits of wearing glasses.
Choosing good regular contact lenses and maintaining good contact lens care habits can protect our eyes well.
