The hazards and benefits of astigmatism contact lenses? _Contact lenses_

The difference between astigmatism contact lenses and ordinary contact lenses is that they can not only correct myopia, but also correct astigmatism. So it is very suitable for those who have astigmatism. However, because astigmatism contact lenses are also in contact with the eyeballs, you need to be cautious in terms of care and wearing requirements, otherwise it will cause a lot of trouble to the eyes. Let's take a look at the hazards and benefits of astigmatism contact lenses. Astigmatism contact lenses are also able to correct astigmatism. The principle lies in the positioning of the lens, keeping the astigmatism axis stable, and correcting astigmatism. For those with astigmatism, it is very helpful. Generally speaking, when the astigmatism is lower than 0.75D, there is no need to make customized astigmatic contact lenses. For high astigmatism or irregular astigmatism, general glasses correction can not achieve a good correction effect, but contact lenses can. The contact lens is applied to the cornea, which can correct astigmatism very well. If you wear astigmatic contact lenses for a long time, it will be easier to cause eye diseases. Due to the long wearing time, the cornea is seriously hypoxic, and the cornea is prone to infection, keratitis, corneal ulcers, etc. Some people also have corneal vascular proliferation and other problems in the cornea, which can lead to blindness in severe cases. Many eye problems with contact lenses are largely due to improper lens care and incorrect wearing methods, causing bacteria to enter the eyes, causing eye inflammation and eye infections. These are very common. Since astigmatism contact lenses are also directly attached to the cornea, if they are worn for a long time, the internal circulation of the eye will be hindered, and the metabolism will not proceed smoothly. If this is the case for a long time, the resistance of the eyes will decrease and the eyes will become very sensitive.