OK lens, also known as orthokeratology lens, is a kind of contact lens with oxygen permeability and high hardness, which is mainly suitable for treating myopia or astigmatism of appropriate degree, and is suitable for children aged 8- 18 to wear at night. The advantage of this pair of glasses is that you can wear them at night and take them off during the day to improve your vision through orthokeratology. The disadvantage is that if the refractive index is too high, it is not suitable for wearing. In addition, the price is relatively expensive and the nursing operation requirements are relatively high. If the lens is not cleaned properly, it may be contaminated. Wearing contaminated lenses may cause conjunctival or corneal infection on the surface of the eye. If the operation is not standardized in the process of wearing, it may directly scratch or abrade corneal tissue, resulting in corneal epithelial cells falling off or epithelial defects, which is a common hazard. If people wearing glasses have bloodshot eyes, photophobia and tears, they must go to the hospital in time. Early detection and treatment can control the development of the disease.
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