Long distance cycling contact lenses will become hard If you often ride a bicycle or motorcycle for long distances, it is also not advisable to wear contact lenses. Because when cycling, the speed of air convection around the speed will be significantly accelerated, so that the water contained in the contact lens sharply reduced, the lens gradually dried, hardened, a long time, hardening of the eyeglass lens is likely to damage the corneal epithelial tissue, causing eye pain, itching, redness and even inflammation. At the same time, when cycling, dust and other foreign objects are more likely to enter the eyes, causing eye discomfort and even infection. The woman’s eye pressure is higher than usual during menstruation, and her eyeballs are more likely to be congested, especially for women with menstrual cramps. If you wear contact lenses at this time, it will have a negative effect on your eyes. Wearing contact lenses when you have a cold can aggravate inflammation When you have a cold, it is often accompanied by mild inflammation of the retina, and contact lenses can easily aggravate the inflammation. Also, patients have a lot of viruses and bacteria on their hands, which can easily enter the eye when taking or wearing glasses. In addition, many anti-cold medications contain ingredients that inhibit tear secretion, causing contact lenses to become too dry and less transparent, which in turn affects vision. Therefore, experts suggest that it is best not to wear contact lenses when you have a cold. The contact lenses are very harmful to the eyes. Passengers taking the plane, the body will be in a different environment from the ground, wearing contact lenses on the plane, the eyes will be affected by the dry air in the cabin and the imbalance in air pressure, a variety of discomfort, such as once the lens under the bubble, resulting in lack of oxygen, easily lead to corneal edema, not only easy to cause vision loss, there may be corneal ulcers and other problems. The problem. This is because the air pressure at high altitude will affect the curvature of the cornea, contact lenses are easy to deform, plus a long time dry, but also make the contact lens material becomes very fragile, once broken may lead to more serious problems. For this reason, experts warn that before boarding a plane, it is best to take off your contact lenses, and you can prepare a pair of ordinary, lightweight frame glasses. If you feel uncomfortable with your eyes, you can rest with your eyes closed, do a simple eye massage, and then do the treatment after you get off the plane, remember not to rub your eyes hard. Pregnant women wearing contact lenses have serious consequences Statistics show that 30% of pregnant women wearing contact lenses will have some problems with their eyes, if not treated in time will affect normal life, and even because of the contraindications of medication during pregnancy, increasing the difficulty of treatment. Pregnant women who wear contact lenses bear the brunt of corneal damage, which can also lead to a range of other conditions. As women’s endocrine system changes during pregnancy, their corneal tissue will undergo mild edema, making the thickness of the cornea increase; and contact lenses themselves block the contact between the cornea and the air, continue to wear contact lenses during pregnancy, will increase the degree of corneal hypoxia, reduce corneal sensitivity, prone to acute corneal injury. Wearing contact lenses while swimming will adsorb germs Wearing contact lenses has strict requirements for environmental conditions, whether it is a swimming pool or a seawater bath, there is no guarantee that the eyes are in clean and hygienic conditions. Contact lenses have adsorption, the water pathogenic microorganisms are easily deposited on the lens, swimming should not wear contact lenses. People who often wear contact lenses have certain inflammation in their eyes, and the stimulation of dirty water makes them more likely to induce eye disease. The actual fact is that you will be able to get a lot more than just a few of the most popular and popular items. It is best not to wear contact lenses with the computer Many people who wear contact lenses, long hours on the computer, eyes will be dry, astringent, very uncomfortable. This is because the number of blinks is reduced. Now commonly used contact lenses, are manufactured using polymer materials, oxygen permeability is not good, to a certain extent, prevent the eyes from breathing oxygen directly, so that the cornea lack of oxygen. In addition to long hours on the computer, the eyes are highly tense, normal people blink more than 20 times per minute, while wearing contact lenses for a long time on the computer, the number of blinks per minute is only four or five times. In addition, poor hygiene habits during the use of contact lenses can cause keratitis, corneal ulcers, eye pain, photophobia, and, in severe cases, eyelid spasms, which can trigger corneal neovascularization and ultimately affect vision. In spring, contact lenses should be worn sparingly. Because of the high and low temperatures in spring, people are susceptible to influenza, which can lead to viral conjunctivitis and viral keratitis. The eye environment is very fragile at this time, if you often wear contact lenses and do not pay attention to eye hygiene, it is very easy to make the inflammation aggravated. At the same time, spring pollen particles in the air can cause allergic conjunctivitis in some people if they get into the eyes. In addition, the northern region of China in the spring often appear windy sandy weather, sand and dust blowing into the eyes, can also lead to eye infections and other inflammatory diseases. Contact lenses are relatively fixed to the surface of the eye when worn, which provides a breeding environment for bacteria and viruses. When pollen or dust accidentally enters the eye, it can easily adhere to the contact lens, which can lead to the growth of viruses and bacteria. Experts suggest that in spring, when the wind and sandy weather, try to wear ordinary frame glasses, so that, on the one hand, the glasses play a protective role to block the dust into the eyes, on the other hand, once the dust particles into the eyes, the tear secretion of the tear glands can also be timely particles flushed away.