How often do you know about the dangers of contact lenses?

Nowadays, myopia is more and more friends, but wearing myopia glasses for a long time is easy to make our eyes convex, and the frame of glasses will affect our nose, so many people now choose to wear invisible. Glasses are both beautiful and convenient, but wearing contact lenses for a long time is also very bad for our eyes. So what are the hazards? Let's take a look at it.

The danger of wearing contact lenses for a long time

Reduced eye resistance

Contact lenses can make the cornea unable to contact the air, causing the eyes to be deficient in oxygen and producing a situation similar to the "altitude reaction" of the human body, resulting in failure to normal metabolism and decreased resistance.

Worn cornea

Contact lenses wear the cornea, which can cause serious consequences of corneal epithelial shedding or perforation. Partial contact lens concavity does not match the corneal convexity, irregular wear of the cornea, causing corneal ulcers, resulting in irreversible vision loss, leaving white spots on the cornea even after treatment.

Cause visual fatigue

I believe that people who have worn contact lenses know this. Most contact lenses will have a reduced moisture content after being worn for a certain period of time, making the eyes very dry and uncomfortable.

This is especially true for people who are sensitive to their own eyes. In the long run, it will inevitably make the eyes more vulnerable, causing problems such as dry eye syndrome.

Cause eyeball allergy

Contact lenses absorb proteins, collagen, lipids, etc. in the tears and deposit them on the surface of the lens, thereby breeding pathogens, corneal edema, corneal neovascularization and allergic reactions.

If you don't wear it for a long time, just wear contact lenses occasionally in important occasions, then as long as you choose a regular brand, the general problem is not big, the specific wearing method is also to learn it!

How to wear contact lenses

First: distinguish the left and right of contact lenses

General contact lens storage boxes are marked with left and right, and the common representation method is to use two English letters R (right abbreviation) L (left abbreviation).

English may be on the front side or on the reverse side. You will find it carefully. If you don't find the English letters, you don't need to worry about which side is the right side and the left side.

Second: the understanding of the front and back of contact lenses

Many people think that the front and back of contact lenses are similar, but once you look closely, you will find that there are still differences. The front of the contact lens is recessed like the bowl we eat. If you reverse it, you will find that the edges of the glasses are spread out and are not comfortable to wear inside the glasses.

Third: how to properly put the lens into the eye

Our eyes are like balls, very flexible, so don't be afraid when wearing them.

First find a mirror, then take the lens out on the index finger of our right hand, then use our left and right hands to open the eyelid and look at the mirror to put the lens.

Fourth: picking contact lenses

Use your right index finger to open the eyelids with your right index finger and use your right thumb and forefinger to remove the lens.

Fifth: lens cleaning

It is recommended that the lens be cleaned daily or every two days. Place the lens on the palm care solution and gently rub it with your fingers.

Sixth: wearing time advice

If you are wearing contact lenses, do not wear more than 4 hours, do not exceed 6 hours after one week, and do not exceed 8 hours after half a month.

When can't I wear contact lenses?

1, a cold

Colds are often accompanied by mild retinal inflammation, and wearing contact lenses can exacerbate inflammation. Many cold, antitussive and analgesic drugs contain ingredients that inhibit tears. A decrease in the amount of tear secretion causes the contact lens to be too dry and less transparent, which in turn affects vision.

2, corneal inflammation

If you have a contact lens and your eye is in the inflammatory phase, wear it until the inflammation disappears.

3, fever

When the fever occurs, the local resistance of the eye decreases, the secretion of tears decreases, and the Bacillus subtilis multiplies, causing the bacterial metabolites to deposit between the cornea and the lens, causing the oxygen permeability of the contact lens to decrease, and the normal metabolism of the cornea is disturbed, thereby causing bacteria. Sexual corneal ulcers.

4, long-distance travel by bicycle

When riding long distances, the convection of the air accelerates, so that the moisture of the soft contact lens is reduced, the lens gradually becomes dry and hard, and the eyes feel uncomfortable. For a long time, the hardened lens will damage the cornea, causing eye pain or bacterial infection. .