Sunglass is a kind of eyesight health care articles for preventing the strong stimulation of sunlight from causing harm to human eyes. With the improvement of people’s material and cultural l...
Effect of refractive index on visual acuity in the aged
Lens thickness
For the elderly with high myopia or farsightedness, it is more appropriate to choose a lens with a high refractive index. The ...
1. Different functions
Ordinary sunglasses use the color dyed on the tinted lenses to weaken all the light into the eyes, but all the glare, refracted light and scattered light enter the eyes, whic...
In summer, the sun is hot and sweat is frequent, and for people who wear frame glasses, choosing a suitable glass material is crucial. So, in the hot summer, what material frame glasses are most su...
Wenzhou is one of the most prominent cities. Wenzhou is regarded as the “Optical Capital of China” and has a large number of wholesale markets that can meet the global demand for glasse...
eyeglass
Optical property
Clarity: Quality sunglasses lenses at any Angle to see the object should be clear, no deformation, no double shadow. You can rotate the lens slightly by observing distant ...
