I habitually wear contact lenses, usually 2-3 times a year will be replaced, what about that hurt the eyes have it? Thank you

Possible, because there is a valid contact lens, and usually throw in a year's period is the most common, but was thrown, it is best to use half a year, you can get a new one up. I've been wearing contact lenses for almost 8 years, and this is the experience of long-term wear.

The contact lens was cast, I suggest you at least once a year for it. After all, with a long time, do not say bad optical quality, it is certainly not clean. Wearing easily cause eye irritation, such as what keratitis ah, retinal detachment ah. The eyes are the window to the soul, we must be cautious of.