Soft contact lenses are the trend of contact lenses in the future, with many advantages, which are many times better than hard contact lenses. However, although soft contact lenses are good, they are not suitable for everyone. Now let's take a look at the small braids of the four seas network. Can everyone wear soft contact lenses?
Can everyone wear soft contact lenses? Soft contact lenses are the most common type of contact lenses. They are very thin and soft. They fit the surface of the eyeball well, so they are comfortable to wear. There are two kinds of materials: hydrogels and silicone hydrogels. Silicone gel material is porous and breathable, so the contact lenses produced are better than those of hydrogels, and the cornea can breathe and wear time. Super long wearing contact lenses is silicone hydrogel. This material is hot at present, and is also the trend of future products. The suitable people for soft contact lenses are as follows:
1. Degree: ball mirror & gt; 1.5D. Astigmatism & lt; 1.5dc. The correction effect of astigmatism is not good.
2. Age: generally 16-40 years old, too old or too big for lens operation or nursing.
3. Base arc: it is generally required that the reading of base arc K is between 41-46d. Too steep or flat will affect the fit of lens.
4. Eye diseases: cornea and conjunctiva should be healthy and complete.
5. Systemic diseases: Patients with diabetes and thyroid diseases should not wear them.
6. Special population: children, pregnant women, menopause women are not recommended to wear.
What's the difference between soft contact lenses and hard contact lenses? Many people don't know. Contact lenses are divided into soft contact lenses and hard contact lenses. Generally speaking, contact lenses only refer to soft contact lenses (soft corneal contact lenses), that is, those sold in glasses stores or on the Internet. It is made of hydrophilic synthetic polymer material with high water content, soft lens, elasticity and good oxygen permeability. Hard contact lenses (RGP lenses are the most popular ones at present) are not available in ordinary glasses stores. Only optometry centers, hospitals and medical units carrying out laser surgery have relevant professional equipment and qualifications. It is usually used in clinical myopia correction, by pressing the cornea to change the length of the eye axis to achieve the effect of myopia correction. Compared with softness, its visual quality is the most clear, and it can achieve satisfactory vision after correction. Although the first time to wear a week of discomfort, but after the habit, in fact, it is the smallest damage to eye health, fatigue is the least.
Prevention of soft contact lens dry eye 1. Eliminate the inducement of dry eye. Dry eye patients with blepharitis or meibomian gland dysfunction. Eye hot compress and eyelid massage can relieve these symptoms;
2. The environment will also affect the comfort of wearing glasses. It can improve indoor humidity, wear sunglasses outdoors, reduce the contact between the eye surface and the wind and dust in the air;
3. Select the appropriate lens and the lens with medium water content and thick thickness. Because the thinner the lens, the easier dehydration;
4. Choose appropriate lens care solution, because the absorption of preservative by soft mirror is one of the reasons for dry eye. Therefore, hydrogen peroxide solution can be used as nursing solution.
5. For the use of eye drops, it is recommended to use artificial tears without preservatives to moisten the eye surface.
6. Emphasize the importance of blink.
7. It is recommended to use disposable soft mirror instead of wearing it for a long time.
Precautions for wearing: 1. Skillful skill of removing and wearing -- wearing glasses
① the index finger should be as dry as possible.
② use the middle finger of both hands to open the root of the customer's eyelash.
③ when wearing glasses, look down, avoid cornea, and avoid tension when you see slowly approaching lenses.
④ slowly release the upper and lower eyelids after wearing the lens to avoid the lens being pinched out.
⑤ if there are bubbles, push the lens to the bulbar conjunctiva above, and move to the front of the cornea after the bubbles are eliminated.
2. Skillful skill of removing and wearing -- removing mirror
① fingers should be as dry as possible.
② use the middle finger of both hands to open the root of the customer's eyelash.
③ when removing the mirror, let the customer look down and take out the mirror lens from the lower edge of the lens with the belly of the index finger and thumb.