Our lenses are made of resin, which is lightweight and highly impact-resistant. Resin lenses also have a strong ability to block ultraviolet radiation to protect your eyes.

This predominantly depends on the strength of your prescription. The higher the prescription, the higher index is required for ensuring your lenses are as light and thin as possible.

Generally speaking, spherical lenses are thick and the images through the lenses will be distorted. While, with the same prescription and index, aspherical lenses are thinner, lighter and more comfortable for wearers. Aspherical lenses have a wider vision and the images through the lenses are more real and natural. Wearers will not feel tired after wearing aspherical lenses for a long time.

The effect of the tinted lens is thoroughly and only one tint color no matter indoor or outside.

The photochromic lens is transparent indoor while color darkens outside.

The polarized lens has the same color indoor and outdoor, and their effect is better than the tinted lens and can filter harmful UV.

Single vision lenses refer to the lens that has only one use, to see objects in the distance, to see intermediate like computer or phone, or to see near for reading (reading glasses).

While progressives are a type of prescription eyeglasses that can be used to correct both near and farsightedness. This means you can see your whole field of vision without switching between multiple pairs of glasses.

No, we offer our lenses with our frames as a whole package. We strongly suggest not to do it as the lenses may not be suitable for your old eyeglasses frame if you buy them only.

What's more, the best service life of a frame is about one year. The frame may be deformed and faded after being used for one year. So, changing frame when necessary is good for your vision and looking.

The higher the refractive index, the thinner the lens, the more the light transmittance.

It may take a few weeks to familiarise yourself with progressive lenses as they have different strength lenses incorporated into one frame.

The upper portions of your lenses are clear. As you lower your eyes, the magnification increases gradually allowing you to see better at different close-up distances.

Adapting to any new lenses requires a short adjustment period. The shortest and surest way to adapt is to stick with one design. Remove them temporarily if you feel you need a break. As you adapt, your eyes will begin to find the area of sharpest reading vision automatically.

At first, when you walk or move your head rapidly, objects to the side may appear to move slightly. This sensation will disappear quickly with continued use. Your progressive lenses have your distance, intermediate, and reading prescription all in one. You may find that walking down the stair is a bit difficult initially as the bottom of your lens is predominantly for the purpose of reading. It will get easier as you wear them more and your eyes start to get used to the lenses.

The lenses will provide the most natural vision possible and have all the adjustments for sight requires in one convenient lens.