Don’t be fooled by the Meitong / contact lens routine

Abstract: many people think that the higher the water content of contact lenses, the better, and they won’t feel dry. But in fact, the higher the water content, the stronger the water absorption, which will in turn absorb water from the eyes, making the eyes more dry.

has a pair of charming big eyes, which is the good wish of every girl. After wearing Meitong, the eyes can become larger instantly, and can change different colors into a necessary product for many young women who love beauty. Then you don’t know the price behind it!

inferior “Meitong” does great harm. Whether the color fading

color contact lenses will fade is a key problem. At present, there are two main treatment methods for the pigment on color contact lenses: one is embedded in the lens, and the other is directly coated on the surface. Mainstream manufacturers generally adopt the former, that is, embedding the pigment layer in contact lenses, which is more stable. Due to capital, technology and other factors, the pigments of many small brand Meitong lenses are directly printed and dyed on the lens surface. The pigments directly contact the cornea and conjunctiva on the ocular surface, which may lead to allergy and inflammation.

corneal hypoxia

corneal surface has no blood vessels. It is an organ that breathes independently. It obtains oxygen through direct contact with air. Contact lenses need to be worn on the corneal surface, so contact lenses must have good oxygen permeability. For color contact lenses, it adds another pigment layer than ordinary contact lenses. If the pigment material blocks or is too thick, resulting in long-term hypoxia of the cornea, neovascularization will grow at the corneoscleral margin, which will affect the transparency of the cornea.

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affect the field of vision.

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color contact lenses have smaller light transmission aperture than ordinary contact lenses due to dyeing. If it is to cover the color of iris itself, the dyeing range will be even larger, making the light transmission optical area smaller. Some color lenses use a smaller optical area in pursuit of exaggerated effect, which will narrow the scope of the eyes when viewing objects, which is very unfavorable to drivers and athletes.

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even if they are qualified, “Meitong” can not wear

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for a long time. After wearing “Meitong” continuously for 5 days, the conjunctiva of experimental rabbits was congested and swollen. After continuous wearing for 10 days, the cornea of experimental rabbits showed large-area punctate wear, the quality of tear film decreased, and caused obvious conjunctivitis and dry eye. New horizon ophthalmologists suggest that even the best contact lenses are difficult to meet the physiological needs of the eye, and long-term wear is not conducive to eye health.

the harm of wearing contact lenses for a long time

the resistance of the eyes decreases.

contact lenses will make the cornea unable to contact the air, and the eyes will produce a situation similar to the “plateau reaction” of the human body due to hypoxia, which can not be metabolized normally and the resistance decreases.

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should not be worn to sleep. The cornea of the eye is a very special organ. There are no blood vessels on it. Its breathing is realized by means of air and surrounding tissues. If you sleep with glasses, it will affect its breathing. In serious cases, it may lead to corneal infection.

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lead to visual fatigue and dry eye. Wearing contact lenses for a long time,

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are prone to visual fatigue and even dry eye. It leads to itchy eyes, foreign body feeling, multiple eye excrement, dry feeling, burning eyes and blurred vision.

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the main index of contact lenses is water content. If the water content is too high, the lens will absorb water from the eyes, causing discomfort and easy to dry. If the water content is too low, it will cause poor oxygen permeability of the lens, and the eyes are easy to feel dry, because the oxygen is transmitted through the water in the lens. Therefore, the ideal water content is between 50% – 60%.

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cause eyeball allergy.

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contact lenses adsorb the protein, lipid and collagen in tears, so that they deposit on the surface of the lens, breed bacteria, corneal edema, corneal neovascularization reaction and allergic reaction.

in the process of using contact lenses, the components in human tears, secretions, impurities or foreign bodies in the external environment inevitably adhere to the lens to form deposits. Even if nursing and cleaning are carried out strictly according to the process, there will still be deposits invisible to the naked eye that cannot be removed on the lens. It is recommended to use monthly polishing or replacement contact lenses with a shorter cycle than monthly polishing.

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wear cornea, which cannot be corrected. The

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contact lenses wear cornea, which may cause serious consequences of corneal epithelial abscission or perforation. The concavity of some contact lenses is inconsistent with the corneal convexity. They wear the cornea irregularly, causing corneal ulcer and irreversible visual loss. Even after treatment, white spots will be left on the cornea. The small scars on the

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lenses vary in depth. In severe cases, they will cause irritation to the eyes and damage the corneal surface. It is necessary to ask an ophthalmologist to judge whether the lenses should be replaced. Some small shallow scars on the surface of hard contact lenses can be repaired by grinding, but soft contact lenses cannot be repaired.

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cause ophthalmic paralysis. Long term attachment of

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contact lenses to the eyeball will paralyze nerve endings and lead to decreased corneal perception. Many patients are unaware of ulcerative keratitis.

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go to a regular hospital or glasses institution for detailed examination, select contact lenses suitable for their own wear, and pay attention to eye hygiene to avoid causing other eye symptoms. In case of redness and dryness of eyes, pain, fear of light, loss of vision, etc. during the process of wearing contact lenses, go to the hospital for examination in time.

corneal aging accelerates

if you wear soft contact lenses from the age of 20, the corneal endothelial cells will be greatly reduced after 5 years, and it is very easy to cause corneal edema after water invasion. After 10 years, the density of corneal endothelial cells is equivalent to that of the elderly aged 60 years, and they will not be able to withstand any ophthalmic surgery.

early myopia should wear frame glasses or visual rehabilitation treatment as far as possible.

what you must know when wearing contact lenses

can you wear contact lenses with wet hands?

we all know that we must wear contact lenses with clean hands, but it is often just a rinse