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What are astigmatism contact lenses? _Contact lenses_

by:Eugenia     2022-02-01
Astigmatism is one of the more common refractive errors in adolescents, and its performance is related to the curvature of the cornea. That is, due to the inconsistency of the refractive rates of the various meridians on the cornea, the parallel rays passing through these meridians cannot be concentrated at the same point, resulting in undesirable phenomena such as blurred vision and visual fatigue. Therefore, experts have specially developed astigmatism contact lenses for these astigmatism patients, which can effectively treat people with astigmatism. So what are astigmatism contact lenses? Who needs to wear astigmatism contact lenses? Let’s take a look. Astigmatism contact lenses are spectacles developed for astigmatism patients. They are hyperboloid contact lenses with different radii of curvature in the meridian direction. The positioning of the lens is taken as the design principle, so astigmatism can be effectively corrected only if the astigmatism axis is kept stable, so it can be divided into two types: custom astigmatism and ordinary astigmatism. The major feature of astigmatism contact lenses is that the water content of the lens is relatively large, generally above 60%. For example, Bausch u0026 Lomb's semi-annual astigmatism contact lenses have a water content of 66%. The stability, accuracy, and comfort of the lens are all Very high, it can ensure that every astigmatism patient has accurate vision in all directions. At the same time, compared with ordinary contact lenses, astigmatism contact lenses can be worn for a long time, because they incorporate a variety of innovative technologies and materials, such as AerGel technology, Performa lens materials, and patented intelligent positioning design (Lo-Torque), which can be comprehensive Locks in moisture, keeps the lens hydrated, and wears more comfortably. Although astigmatism contact lenses are glasses used to correct astigmatism, they are not suitable for everyone. Generally speaking, astigmatism contact lenses are suitable for patients with astigmatism greater than or equal to 75 degrees, patients with higher oxygen permeability requirements of the lens, patients with poor vision stability, and people with congenital astigmatism. You can wear astigmatic contact lenses.
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