The degree affects the thickness of the eyeglasses online cheap lenses. Everyone understands this, no more words. Generally, the larger the refractive index number, the thinner the lens with the same raw power.

Sheet metal frames are generally thicker, while metal materials eyeglasses online are generally thinner. If other factors remain unchanged, the actual processed material should be the same, but the coarse plate material can cover a part of the lens thickness, making it appear less thick.

If there is astigmatism, the closer the axial position is to 180, the thinner it becomes. For people with high astigmatism, the axial position of 180 has little effect on thickness. However, people in the 90-axis position have a significant impact on thickness.

Circular eyeglasses online cheap lenses are thinner than square lenses. Circular ones do not have corners like square ones, and grinding them will indeed make them appear thinner, but the impact is not significant.

The size of the lens. If the frame size and pupillary distance are the same, but the slice shape is small. Take a smaller part of the lens, which will also be thinner when ground.

How to choose a pair of relatively thin glasses for high myopia? If your pupillary distance is 66, choosing a size of 66 for the frame is the most ideal and thinnest, which means choosing a smaller frame.

If the distance between the pupils is very small and only 58, most people will pinch their faces if they choose the 58 frames. We can only choose to keep the frame as small as possible without pinching our faces. People with high myopia, small pupil distance, and large faces need to be cautious from the perspective of glasses fitting.