How to Choose Different Lens Materials?

There are so many kinds of lenses, how to choose different materials? How to choose the right lens?

What are the types of lenses?

According to different materials, lenses can be divided into resin lenses, glass lenses and PC lenses.

According to the refractive index, the resin lens can be divided into 1.50, 1.56, 1.60, 1.67 and 1.74.

According to different functions, lenses can be divided into single lenses, defocus lenses, progressive multifocal lenses, anti-fatigue lenses, color changing lenses, polarizing lenses, anti-blue lenses and driving lenses.

Which lens do you choose: resin lens, glass lens or PC lens?

The resin lens is light in material, strong in impact resistance, not easy to break and high in light transmittance. So, it has become the mainstream lens. Glass lenses are used by fewer people because of their heavy weight and fragile properties. But the advantage of glass lenses is its high refractive index. For high myopia customers, thinner and more beautiful lenses can be customized. PC lenses have a very strong toughness and are not easy to break, especially suitable for making sports glasses.

What kind of lenses do I need to choose?

For teenagers

It is suggested to choose anti fatigue lenses or defocus lenses for school-age teenagers. The principle of defocus lens is to form a myopic defocus effect in the peripheral retina, which can effectively delay the adaptive growth of the eye axis and the development of myopia degree. The general anti fatigue lens is similar to progressive lens, adding 0.50D ~ 1.00d positive degree in the near use area of the lens, so that the adjustment function of the eye can be relaxed when looking closely, and effectively relieve the fatigue feeling of the eye. Children blue light blocking glasses are the best blue light glasses for kids.

For young and middle-aged people

Young and middle-aged people of this age group are mostly office workers who have been working on computers for a long time. It is recommended to choose glare glasses for computer screen or anti-blue-light clip on glasses.

Anti-eye-fatigue glasses and anti-blue light goggles can effectively reduce the continuous damage of harmful blue light to the eyes. Through the comparative detection of portable spectrum analyzer, after using anti blue glasses, the blue light intensity of mobile phone screen has been effectively suppressed, and the harm of harmful blue light to eyes is reduced.

Blue light blocking anti reflective coating or anti reflective blue blocker is added to the lens substrate to absorb the harmful blue light, so as to block the harmful blue light and protect the eyes.

For the elderly

Progressive multifocal glasses are recommended for middle-aged and elderly people. Because with the growth of age, eye accommodation function decreases, so the elderly will appear to have a presbyopia phenomenon. For patients who have been equipped with remote glasses, they usually need two or more pairs of glasses to meet the needs of seeing far, seeing middle and seeing near clearly. Progressive multifocal reading glasses can fully solve this series of problems and achieve the effect of "one pair of glasses with multiple functions".