Under what circumstances is it best not to wear contact lenses? With the increasing popularity of contact lenses, many beautiful girls have worn contact lenses, but contact lenses are not suitable to wear at any time, so under what circumstances is it best not to wear contact lenses?
First: contact lenses will harden when riding long distances
If you often ride a bicycle or motorcycle for a long distance, you should not wear contact lenses. Because when riding, the speed of air convection around will be significantly accelerated, so that the moisture content in contact lenses will be sharply reduced, and the lenses will gradually dry and harden. Over a long period of time, the hardened lens sheet is very likely to damage the corneal epithelial tissue, causing eye pain, itching, redness, swelling and even inflammation. At the same time, when riding, dust and other foreign bodies are more likely to enter the eyes, causing eye discomfort and even infection.
Second: high intraocular pressure during menstruation, should not wear contact lenses
Women's intraocular pressure during menstruation is higher than usual, and the blood around the eyeball is more likely to be congested, especially for women with dysmenorrhea. At this time, if you wear contact lenses, it will have adverse effects on the eyeball.
Third: wearing contact lenses when you have a cold can aggravate inflammation
Cold, often accompanied by mild retinal inflammation, contact lenses easy to aggravate inflammation. And patients with hands with a large number of viruses and bacteria, easy to take, wear glasses into the eye. In addition, many anti cold drugs contain ingredients that inhibit the secretion of tears, resulting in contact lenses too dry, reduced transparency, and then affect vision. So experts suggest: it's best not to wear contact lenses when you have a cold.
Fourth: Flying contact lenses do great harm to eyes
When a passenger flies on an airplane, his body will be in a different environment from the ground. When he flies with contact lenses, his eyes will be affected by the dry air in the cabin and the imbalance of air pressure, resulting in a variety of discomfort. For example, once bubbles are generated under the lenses, which will cause hypoxia, it will easily lead to corneal edema, which will not only cause vision loss, but also corneal ulcer Question. This is because the air pressure at high altitude will affect the curvature of the cornea. Contact lenses are easy to deform. Coupled with long-time drying, the material of contact lenses will become very fragile. Once broken, it may lead to more serious problems. To this end, experts remind that before boarding the plane, it is best to take off contact lenses and prepare a pair of ordinary, lightweight frame glasses. If you feel uncomfortable with your eyes, you can take a rest with your eyes closed, do a simple eye massage, wait until you get off the plane, and remember not to rub your eyes.
Fifth: pregnant women wear contact lenses more serious consequences
Statistics show that 30% of pregnant women wearing contact lenses will have some eye problems, if not treated in time, it will affect their normal life, and even increase the difficulty of treatment because of the contraindication of medication during pregnancy. "Pregnant women wear contact lenses, corneal damage is the first to bear the brunt, but also lead to a series of other diseases. Experts say that because women's endocrine system changes greatly during pregnancy, their corneal tissue will have mild edema, which will increase the thickness of the cornea; and the contact lens itself blocks the contact between the cornea and the air. If you continue to wear contact lenses during pregnancy, it will increase the degree of corneal hypoxia, reduce corneal sensitivity, and prone to acute corneal injury.
Sixth: when swimming, wearing contact lenses will absorb bacteria
The requirements of wearing contact lenses on environmental conditions are relatively strict. Whether it is a swimming pool or a bathing beach, it can not ensure that the eyes are in clean and sanitary conditions. Contact lenses have adsorption, pathogenic microorganisms in water are easy to deposit on the lens, so it is not suitable to wear contact lenses when swimming. Often wear contact lenses, the eyes have a certain degree of inflammation, coupled with the stimulation of dirty water, more likely to induce eye disease. Epidemic conjunctivitis, trachoma, etc., can be transmitted by swimming.
Seventh: it's better not to wear contact lens when using computer
Many people who wear contact lenses are very uncomfortable when they face the computer for a long time. This is because the number of blinks has decreased. The contact lenses commonly used nowadays are all made of high polymer materials. The oxygen permeability is not good. To a certain extent, it hinders the eyes from breathing oxygen directly and makes the cornea lack of oxygen. In addition, when facing the computer for a long time, the eyes are highly nervous. Normal people blink more than 20 times per minute, while when wearing contact lenses to face the computer for a long time, the number of blinks per minute is only four or five. In addition, bad hygiene habits during the use of contact lenses can cause keratitis, corneal ulcer, eye pain and photophobia, and even cause blepharospasm in severe cases, induce corneal neovascularization, and ultimately affect vision.
Eighth: try to wear less contact lenses in spring
Due to the high and low temperature in spring, people are easy to get influenza, leading to viral conjunctivitis and viral keratitis. At this time, the eye environment is very fragile, if you often wear contact lenses and do not pay attention to eye health, it is easy to aggravate the inflammation. At the same time, if the pollen particles diffuse in the air in spring enter the eyes, some people will get allergic conjunctivitis. In addition, there are often strong winds and sand blowing weather in northern China in spring. Dust blowing into the eyes can also lead to eye infection and other inflammation. Contact lenses are relatively fixed on the surface of the eyeball when worn, which provides a breeding environment for bacteria and viruses. When pollen or dust inadvertently into the eyes, it is easy to attach to contact lenses, leading to the breeding of viruses and bacteria. Experts suggest that in spring when the wind and sand weather, try to choose to wear ordinary frame glasses, on the one hand, glasses play a protective role, prevent dust from entering the eyes, on the other hand, once dust particles enter the eyes, tears secreted by lacrimal gland can also be washed away in time.