In today’s digital age, glasses have become an integral part of many People’s Daily lives, whether for vision correction or as a fashion accessory, the choice of glasses is particularly...
What is cellulose acetate?
Cellulose acetate refers to a thermoplastic resin obtained by esterification with acetic acid as a solvent and acetic anhydride as an acetylating agent under the action o...
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...
What is the difference between resin lens and pc lens, which is good?
Resin lens and PC lens as the two mainstream materials of modern eyeglass lenses, each has its own unique characteristics and a...
With the continuous recovery of the global economy and the continuous changes in consumption concepts, eyeglasses are no longer just a tool to adjust vision. Sunglasses have become an importan...
