For contact lenses, ophthalmologists generally hold a conservative attitude, because long-term use of contact lenses has a lot of potential harm to the eyes, but in fact, long-term wear down, the lens and the eye is mutual influence, in order to avoid a vicious cycle, we must follow the norms to operate.
If the day cast lens, after each wearing do not need to do special care, just pay attention not to reuse can.However, for other types of contact lenses, the lenses will face the problem of gradually aging and becoming brittle in use. Moreover, since the protein precipitation cannot be completely removed during rubbing, the longer the contact lenses are worn, the more precipitation will be deposited on the surface of the lenses, which will gradually block the oxygen-permeable holes.
The most common effects of contact lens wear on the eye are dry congestion and decreased corneal perception.This is mainly because the lens is glued to the eyeball, blocking oxygen, affecting the metabolism of the cornea.Worn incorrectly, lenses can cause damage to the corneal epithelium, resulting in sore eyes and photophobia.Once the lens is contaminated, or in the process of taking off the bacteria into the eye accidentally, in a short period of time a large number of bacteria, it will cause a comprehensive infection, causing keratitis and conjunctivitis and other diseases.
However, it's safe to assume that wearing contact lenses properly, as per standards, will not harm the eyes and will not cause them to deepen.In order to use contact lenses safely, it is necessary to develop good hygiene habits, do a good job of cleaning and nursing, delay the process of lens and cornea damage, and pay special attention to the lens at all times must not be water, also must not use water to rinse the box and other tools, lest the lens become contaminated or deteriorated.