span style="background-color:#dfc5a4;" >Regular adjustments: after wearing for a while, frames may be distorted, to the burden on the nose and ears, and the lens is easy to loose. You can adjust themselves or to the store.

Placement : place the lens must be for a short time on the convex face, or easy to wear away, and avoid contact with chemicals, cosmetics, pharmaceuticals and other, more to avoid direct sunlight and high temperatures. If it is placed for a long time, use glasses cloth wrapped into a glasses case