The data is here. The two or three grams that glasses weigh are not much different for us people. What's more important is the discountglasses ratio.
The dark-framed glasses are actually heavier, but the overall ratio is better, so I feel more comfortable.
The size of the discountglasses frame has a greater impact on thickness than other factors, and there is no need to spend more money like increasing the refractive index, achieving the goal of being thinner without choosing high refractive index lenses.
For those with high myopia, you know: how to match lightweight and thin glasses! Discuss the factors that affect the thickness of lenses. How thick are the lenses made? How many millimeters thick is it after assembly?
Frame size. Assuming a pupillary distance of 60, if the pupillary distance of the frame (i.e. the distance between the geometric centers of two pieces) is 70, divided by 2, it should be 5 millimeters to move the center point.
The amount of heart transfer is the fundamental factor that determines discountglasses thickness. The myopia film has a thin center and thick edges. So the thicker it gets towards the edge.
Pupil distance size. Assuming that a person with a distance of 70 and 68 pupils has a heart shift of only 1, while a person with a distance of 58 pupils has a heart shift of 6. Assuming all other factors remain constant, those with a smaller natural pupillary distance will be paired with thicker ones.
High or low degree. I understand this, no more words. Sheet metal frames are generally thicker, while metal materials 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.
