How is it that contact lenses don't feel breathable?

After a series of efforts to popularize science, we can see that when we continue to wear contact lenses, the concern for health is increasing, but at the same time, some people occasionally have a feeling of airtight, and ascribe it to the illusion. Especially now approaching summer, the temperature is gradually rising, the feeling of airtight may become more and more obvious, what is this?

The biggest reason why the eyes are not breathable is that the cornea is hypoxic, which may be that the oxygen permeability of the lens is too poor, or it may be worn for too long. When the cornea cannot get enough oxygen, it will become more fragile than usual, and it is easy for bacteria to take advantage of it. Neovascularization reaction is the result of long-term corneal hypoxia, if the new blood vessels invade the central part of the cornea, it will also block the line of sight. And more importantly, vascular hyperplasia is irreversible, once it appears can not be eliminated, if not early intervention, the final outcome is blindness.

If it is foggy and unclear to see things, it is mainly because of too much protein precipitation on the lens. The direct reflection of corneal hypoxia is a large increase in secretions in a short period of time, and they will eventually deposit on the lens, reducing oxygen permeability and blocking the line of sight. If it is always not thoroughly cleaned, the subsequent precipitation will continue to accumulate more difficult to remove, which we can only recommend that you throw it away directly.

If there are other symptoms at the same time, and there is no relief after stopping wearing lenses, it may not be the problem caused by contact lenses but other eye diseases, such as vitreous opacity, keratitis, etc., be sure to go to the eye hospital in time to check so as not to delay treatment.

The author reminds you that if you really love to wear and often wear contact lenses, you must buy products with a high oxygen permeability coefficient to prevent the problem of corneal hypoxia from the source.