As we all know, contact lenses are a very popular kind of glasses, many people will often wear contact lenses. Contact lenses look cleaner and more convenient than the frame, so they are popular with many girls. Can they be worn during menstruation?
Can menstruation wear contact lens
Experts warned that women should not wear contact lenses during menstruation, because the endocrine function has changed at this time, which can reduce the barrier function of corneal tissue and tear secretion, causing discomfort.
In addition, pregnancy is the same thing. And no matter how good the quality of contact lens is, it will always be a foreign body for the cornea, which will hinder the eye's demand for oxygen. Every blink will produce a certain friction with the eye surface. Therefore, ordinary people should not use contact lens for a long time or continuously, otherwise it will make the cornea in a state of continuous hypoxia, which may lead to keratitis and even corneal ulcer.
Due to the decrease of immunity during menstruation, the local resistance of Yanqing is also decreased, and the secretion of tears is reduced. Bacillus subtilis will multiply in large numbers, so that the metabolites of bacteria will deposit between the cornea and the lens, resulting in the decrease of oxygen permeability of contact lenses, and the interference of normal metabolism of cornea, thus causing bacterial corneal ulcer.
So myopic family mm do not patronize the beauty, and ignore the eye health, in a special time is the need for special treatment. Since it is harmful to wear contact lenses during menstruation, experts suggest that for the sake of our eye health and eye comfort, it is best not to wear contact lenses at this time. For special people in need, if you have to wear contact lenses, do not wear them for a long time. You need to pay attention to eye hygiene and contact lens cleaning, and also understand the precautions for using contact lenses.
What circumstance should not wear contact lens
Should not wear contact lens when sleeping
Wearing contact lenses while sleeping is an extremely dangerous behavior. Some people in the afternoon nap because of the short time, often lazy to take off contact lenses, think that this has no effect on the eyes. However, this is not conducive to the normal breathing of the cornea of our eyes.
Contact lens will harden after long distance cycling
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.
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.
Wearing contact lenses can aggravate inflammation when you have a cold
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.
Flying contact lens is harmful 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.
Pregnant women wearing contact lenses have 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.
Contact lenses will absorb germs when swimming
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.
You'd better not 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.
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.
Contact lenses should not be worn in the kitchen and other places with fire
In fact, contact lens is a kind of polymer material. If it encounters a place with high temperature or Mars, it will shrink rapidly and cause irreparable damage to the eyes. I wonder if you've ever heard of a girl who suffered from insomnia when she was eating barbecue.