Warm tips

1.Please correctly understand photochromic glasses, he color depth does not equal sunglasses

2.Test discoloration, it is recommended to test at noon, noon sun UV strong, discoloration can achieve the best results, more test several times, the effect is better.

3.Photochromic lenses are mainly used prevent sunlight and ultraviolet light from damaging the eyes.so is suitable for outdoor use.

Function : Prescription Glasses

Custom Prescription Information

Right sph:(+6.0~-6.0) astigmatism:(-0.5~-2.0) axis:(0~180)

Left sph:(+6.0~-6.0) astigmatism:(-0.5~-2.0) axis:(0~180)

Pupil Distance(40~80)

How to purchase prescription glasses?

1.How to choose between single version and progressive version?

① When you need to see far and near for use, and there is ADD data in the prescription, please choose the progressiveor bifocal Lenses.

② If you only need to see far or near for use, please choose a single version.

2.How to choose the refractive index of lenses (1.56/1.61/1.67/1.74)

（The higher the refractive index of the lens, the thinner the lens, and the more comfortable it is to wear）

① If the sum of your SPH and CYL numbers is less than 300 degrees, it is generally recommended to choose lenses with a refractive index of 1.56. Of course, lenses with a refractive index of 1.61/1.67 are also suitable, as they will be thinner and more comfortable to wear.

② If the sum of your SPH and CYL numbers is greater than 300 and less than 500 degrees, generally choose 1.61 lenses. Of course, 1.67/1.74 lenses are also suitable as they will be thinner and more comfortable to wear.

③ If the sum of your SPH and CYL numbers is greater than 500 and less than 800 degrees, generally choose 1.67 lenses. Of course, 1.74 lenses are also suitable as they will be thinner and more comfortable to wear.

④ If the sum of your SPH and CYL numbers is greater than 800 degrees, a lens of 1.74 is generally chosen.

3. How to choose lens functions?

① Photo Brown/Photo Grey: Lenses do not have anti blue light function, but have anti reflection function. Lenses will darken in sunlight, turning brown and gray (changing color with the intensity of ultraviolet light)

② Anti Blue Ray: The lenses have anti blue light and anti reflection functions, which are our most commonly used prescription glasses

③ None: This lens only has anti reflection function, make prescription glasses according to the prescription