1, long-term compression of cornea can easily lead to corneal damage.
2, wearing OK glasses is easy to rebound, if you don't wear them, the degree will soon return to its original appearance.
3. If improperly worn, it may infect bacteria, and even cause keratitis, corneal ulcer and perforation.
"Orthokeratology mirror", commonly known as "OK mirror", changes the curvature of cornea through compression, thus reducing the degree of eyes, treating the symptoms rather than the root cause, and once it is stopped, the degree will recover.
Extended data
Corneal morphoscope
Matters needing attention
The early plastic mirror was made of PMMA, which was airtight and had poor physiological characteristics, and was limited to daily wear. Nowadays, there are three kinds of oxygen permeable materials to choose from, so it is feasible to wear them during the day or at night, depending on the specific situation of doctors and patients. Some doctors tend to let patients with high myopia wear them during the day to ensure safety.
When ordinary RGP lenses are worn daily, it is enough to choose DK greater than 18, but plastic lenses should be made of materials with higher oxygen permeability, and the DK value is greater than 50. Corneal plastic lenses are larger in diameter and thicker than ordinary RGP lenses.
More patients will choose to wear it at night. The material DK of night wear film should be greater than 90 and the thickness should be less than 0.3mm to meet the safety requirements.
Orthokeratology is the only customized eye measurement, which can make myopia patients below 600 degrees quickly reach the international standard of 1.0 or above within 1-2 weeks; The degree of effective containment has deepened; Suitable for 6-40 years old, just wear it at night, without any dietary and eye taboos, to maximize your convenience; After three months of corneal transplantation, if you insist on wearing it every day, you only need to check it once a year under the guidance of experts to ensure that the lenses are not worn, so that you can ensure clear vision and cope with myopia rebound.
Anti-counterfeiting: With the wide application of plastic film mirror, the existing products that are not imported from abroad enter the market (at present, the technical problems of high oxygen permeable materials and pneumatic cutting cannot be solved in China). To protect your eyes, please look for it:
δ FDA-certified pajamas
Δ Approved by National Medical Products Administration
Δ Anti-counterfeiting IC card can realize visual dialogue with chain institutions in Southeast Asia, and read their own eyeball information to obtain high-quality service.
Δ Original packaging of American Orthokeratology Lens
On February 13, 2008, China State Food and Drug Administration approved the first domestic enterprise to produce plastic glasses, and further standardized the refractive range and various parameters used.
reference data
Orthokeratology mirror-Baidu encyclopedia