In the discussion of “What is the optical refractive index of an eye lens?” When it comes to this problem, we first need to understand the physical concept of optical refractive index, ...
Frame width
Too wide: If the frame width is too large, the glasses are easy to slide on the face, especially in some light exercise or facial sweat, this situation will be more obvious. At the same...
Wear properly and care for the condition
Breathability and corneal health: Modern contact lens materials in breathability and other aspects have been greatly improved, as long as the choice of qual...
The maintenance of children’s glasses requires attention to cleaning, storage, use, etc.
The following are specific maintenance methods:
Clean lenses
Daily cleaning: Wipe the lenses daily wit...
When discussing the topic of how to buy glasses frames for children, we first need to make it clear that the choice of glasses frames is not only a consideration of beauty and fashion, but also rel...
To determine whether the surface treatment process of titanium sunglasses frame is proper, you can start from the following aspects:
Observation appearance
Color uniformity: Properly processed fram...
