TR-90 (plastic titanium) is a kind of polymer material with memory. It is the most popular ultra-light spectacle frame material in the world. It has the characteristics of super toughness, impact r...
How to wear the right glasses correctly
Correct vision and protect the eyes: for people with refractive errors (such as myopia, farsightedness, astigmatism), long-term wear of the appropriate degre...
There is no fixed standard for the replacement time of children’s glasses, and it is necessary to comprehensively judge the changes in the child’s vision, the degree of wear of the glas...
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...
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 ...
