Ok lenses are a popular type of eyeglasses, which are mainly used to correct myopia and have a certain protective effect on vision, many children and teenagers wear ok lenses. ok lenses belong to medical devices, which need to be examined and dispensed in professional hospitals, and general vision testing centers or optical stores can't examine and dispense with them.
Is it better to get ok lenses in a hospital or in a vision center
A professional hospital is more reliable.
OK lens fitting is a medical behavior, the Ministry of Health expressly stipulates that only hospitals with both fitting qualifications and professional doctors can do it, general optical stores and so-called myopia treatment institutions are not hospitals, and can't fit patients casually. You need to go to an eye hospital with qualifications to find a specialist doctor for scientific fitting and evaluation, so as to avoid causing adverse reactions.
OK lenses are designed with four zones and seven arcs, and OK lenses are made of highly oxygen permeable materials. The cornea normally relies on the oxygen in the air for metabolism, and an increase in oxygen permeability reduces the hypoxia of the cornea and avoids complications such as corneal inflammation.
The fitting of OK lenses must be done by a professional under the supervision of an ophthalmologist or optometrist, and in accordance with the requirements of the State Food and Drug Administration, it must be equipped with medical equipment such as computerized optometry, corneal curvature meter, corneal topography, pneumatic tonometer, corneal thickening meter, slit lamp microscope, funduscope and other medical equipment, as well as regular follow-up observations.
OK lenses in the hospital or outside which is better
The hospital is better.
OK lenses are class 3 medical devices, similar to heart valves and heart stents. The ordinary eyeglasses store has no relevant qualifications! You have to go to a regular medical institution with a Medical Practice License, and be guided by a doctor.
The main significance of wearing OK lenses is: to control the growth rate of myopia! The main significance of wearing OK lenses is to control the growth rate of myopia and delay the arrival of high myopia! Secondly, it temporarily reduces the amount of myopia, so that the child can travel during the day without having to wear glasses.
The principle of OK lenses is simply to "flatten the cornea". The cornea of myopic eyes is more convex in the front, and when sleeping, OK lenses can help to flatten the cornea temporarily by applying physical pressure to the cornea with the help of eyelid pressure, so that the central arc of the cornea can be flattened temporarily.
The process of configuring OK lenses
① It takes about 1~2 hours to test and fit the keratoplasty lenses. First check the parameters of the eye with the instrument.
② After that, the doctor conducts medical examination and prescription test, then communicates and discusses with the patient, chooses the brand of lenses and then tries to wear them for evaluation, and finally communicates with the patient again according to the examination results, signs the informed consent form, and determines the prescription and then orders the lenses. The cycle of ordering lenses takes 2 days to 3 weeks depending on the brand.
③ Lenses do notify the patient by phone to come to the hospital to pick up the lenses, and at the same time to wear the missionary guidance, it takes about 0.5 ~ 1 hour, and make an appointment for the next review time.
The fitting process generally requires six steps: inspection, communication, try on, finalize the film, take the lenses missionary, regular review.