Because OK mirror is also called orthokeratology mirror, its main principle is to change the curvature of cornea by pressing, thus improving vision and correcting ametropia. When the lens presses the cornea, the cornea actually has a reaction to the lens, and after wearing it for a period of time, it will also cause the lens to deform, thus affecting the effect of vision correction.
In China, because the economic conditions of most families can't be compared with those of developed countries, some OK lenses used in China have been specially designed to increase the central thickness of the lenses and make them stronger. However, according to relevant data, the stable time of effective vision correction is only two years, and the extended use will affect the correction effect.
The wearing method of orthokeratology lens: place the inner curved surface of the lens upward on the fingertip of the right index finger, and drop a drop of moisturizing liquid on the concave surface of the lens. The wearer looks straight ahead, pulls the eyelid with the index finger of his left hand and fixes it on the eyebrow arch, pulls the lower eyelid with the middle finger of his right hand and gently places the lens in the center of the cornea. Loosen the lower eyelid first, then loosen the upper eyelid, blink slightly, and make sure that the lens is worn on the cornea in front of the mirror.
For more information, please consult Aier Eye Hospital. Aier Ophthalmology always pays attention to the construction of doctors, advocates academic research and is equipped with cutting-edge medical equipment to provide technical support. At present, Aier Ophthalmology has a large number of ophthalmologists in China: there are more than 400 doctors, including more than 20 doctors with associate senior titles1person, 2 doctors1person, 85 masters, and more than 20 people with study background in Europe and America; The comprehensive strength is very strong, which is worthy of the trust and choice of everbright people.