How to use?

Orthokeratology Knowledge

Daily Cleansing Procedure

Wear Procedure

How to deal with lens shift

Removal Procedure

The following is standard equipment for providing orthokeratology:

◎ Standard eye examination room (instruments must include slit lamp microscope and corneal topograph).

◎ Slit lamp microscope to monitor eye health.

◎ The corneal topograph can effectively monitor the small changes of the cornea to determine the effect of orthokeratology.

◎ The environment is clean and tidy, and there is a proper water supply.

◎ Appropriate orthokeratology information and consent form.

◎ Medical record form.

◎ Clean and neat audition (some orthokeratology lenses are designed by computer and do not require audition).

◎ Regular follow-up visits. Early examination after the first night of each pair of new mirrors is very important, and then follow-up visits every other week, two weeks, and one month. After the effect is stable, regular follow-up visits are required at least every three months to monitor the effect of the treatment and avoid problems.

Wear Orthokeratology (ORTHO-K LENS)
Precautions

Our optometrist has ten years of experience in fitting orthokeratology glasses for school children of different ages, and found that many students/parents neglect the following matters

Correct: The lens must be placed in a lens care solution with detoxification function. Normal saline has no detoxification function, so it is not applicable.

Correct: Remove the lens in the morning, if there is any deposit on the lens, it is easier to remove even if it is cleaned.

Correct: Use a suction cup to suck out the lens, make sure that the lens is on the eye and not sticking to the eye, otherwise the cornea will be easily damaged.

Correct: Colleagues in our center will definitely teach children/parents how to remove the lenses with both hands. In addition, we recommend that the lens suction cups be used only in emergency situations. Studies have shown that the bacterial content of lens suction cups is relatively high.

Correct: The concave and convex sides of the lens must be cleaned. The correct cleaning procedure can be viewed

Correct: During the follow-up consultation, the optometrist will not only check the pupil's eye health, vision and power (myopia/astigmatism), but also check the cleanliness or wear of the lenses. If there is any problem with the lens, the right medicine can be prescribed.

Correct: During the follow-up consultation, the optometrist will not only check the pupil's eye health, vision and power (myopia/astigmatism), but also check the cleanliness or wear of the lenses. If there is any problem with the lens, the right medicine can be prescribed.

Orthokeratology (OK Lens)

OK lenses are contact lenses used for orthokeratology and must be checked and fitted by a qualified optometrist. If the myopia increases rapidly, children should wear "OK ​​lens" as soon as possible. It has been proven effective in controlling and slowing down the progression of myopia in clinical studies** conducted by our optometrists. It is generally recommended that school children aged 6 or above can use the OK mirror. Our child who wore the "OK lens" at an early age was 5 years old.

Myopia generally begins to appear between the ages of 5 and 15. With the development of the eyeball, the degree of myopia increases by an average of about 50-100 degrees per year. If both parents are nearsighted, myopia will deepen faster. And after reaching the age of 15 to 17 years, the growth of the degree will gradually slow down.

In order to effectively control children's myopia, in addition to the cooperation of the children, it also requires the assistance of parents and the professional advice of an optometrist to achieve the desired results.

**A randomized clinical study conducted by the School of Optometry of PolyU found that children who received orthokeratology (OK lenses) had an average increase of 13 degrees of myopia after two years, and an average increase of 100 degrees of myopia after wearing glasses. The longer the eye axis, the deeper the myopia. The study also showed that orthokeratology (OK lens) can effectively slow down the eye axis extension by 63%, which means that it can significantly delay the deepening of the degree of myopia in children with deep myopia.

Contact lenses

Contact lenses need to be fitted because contact lenses have different parameters. Here are the basic concepts:

1. The curvature of contact lenses: The curvature of each brand is different and cannot be directly compared. Even if the values ​​of two qualities are the same, it does not mean they are equal. Because of the need to pay attention to the measurement method and error, it is ideal to be dispensed after the optometrist has checked.

2. Materials for contact lenses: In general, each company uses their own materials to manufacture contact lenses. Of course, they are all qualified materials, but the comfort and moisture content of the materials are different.

3. Oxygen permeability of contact lenses: The direct impact on the eyes must be the oxygen permeability of contact lenses. If the oxygen permeability is not enough, it will cause blood vessel hyperplasia, corneal hypoxia, etc., resulting in irreversible adverse effects.

4. The moisture content of contact lenses: The moisture content directly affects the wearer's feeling of dry eyes.

5. The degree of contact lenses: not exactly equal to the degree of your glasses, especially astigmatism and axial may not be the same, which will affect the clarity of vision.

6. Color of contact lenses: The color of contact lenses may change the color of eyeballs, which can be more beautiful and spiritual. But if the color of the contact lens is engraved on the inside, the cornea will be in direct contact with the color, and the long-term effects are unknown.

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