Is there any harm in wearing contact lenses for a long time?

Contact lenses, also known as contact lenses, are lenses worn directly on the cornea of the eyeball, which can correct vision and protect eyes. Contact lenses include hard, semi-hard and soft, each with its own characteristics. Contact lenses bring great convenience to patients with inflection points, have the characteristics of wide field of vision and realistic objects, and also play a special role in controlling myopia and astigmatism of teenagers. However, contact lenses also have a lot of attention, and improper wearing will cause great harm. So, what are the hazards of wearing contact lenses for a long time? Let's look at the four hazards of contact lenses.

1, the eye resistance decreases, and contact lenses will cause the cornea of the eye to be unable to contact the air, and the eye will be deprived of oxygen, similar to "altitude sickness". Contact lenses can also hinder the normal metabolism of the eyes and reduce resistance. Some experts suggest that you should try not to sleep with contact lenses. The cornea of the eye is a special organ. It has no blood vessels and needs to breathe through air and surrounding tissues. Wearing contact lenses to sleep will affect corneal health and even cause infection.

2, visual fatigue, dry eye wearing contact lenses for a long time, easy to cause eye fatigue, causing dry eye. Patients' eyes will feel itchy, foreign body sensation, dryness, burning sensation and blurred vision.

3, cause eyeball allergy, contact lenses will absorb protein, lipids, collagen, etc. Tears on the lens lead to a large number of bacteria, which can lead to corneal edema and neovascularization.

4, wearing a cornea, wearing contact lenses for a long time will wear the cornea, which will lead to epithelial shedding or even perforation in severe cases, leading to serious consequences.

The above introduces the four hazards of wearing contact lenses for a long time. Contact lenses are suitable for patients with ametropia, including myopia, hyperopia and astigmatism. , and convenient and beautiful. However, contact lenses are in direct contact with the cornea, which can easily bring bacteria into the eyes and cause infection. Contact lenses cannot be worn for a long time, 24 hours or even overnight.