In the discussion “Can nearsighted people not wear glasses?” On this topic, we first need to clarify the definition of myopia, the causes and the role of glasses in correcting vision, a...
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 ...
Product characteristic class
The principle and application of polarized sunglasses: mainly involves how the polarized lens filters the light in a specific direction, reduces glare, and the practica...
Consider face shape
Round face: suitable for square or rectangular eyeglass frames, so that you can use straight lines to neutralize the roundness of the face, increase the three-dimensional sense ...
Wearing experience
Comfort: If the size of the sunglasses is too large, the glasses are easy to slide, frequent adjustment will bring a lot of inconvenience; If the size is too small, it will cause...
When choosing eyeglass lenses, consumers often hesitate between high-definition lenses and anti-blue lenses. These two lenses have their own advantages and are suitable for different use scenarios ...
