There are some very real feelings about wearing single-lens cheap eyeglasses near me: some people say that the spherical deformation is severe, and the new non-spherical design is definitely good, while others say that the nonspherical adaptation is just a gimmick or the spherical design is better.

Some people say that the double non-spherical lenses are very suitable for height numbers, both are single-focus lenses. What are the differences between these cheap eyeglasses and near-me lenses with the same prescription?

At present, we can only measure the central luminosity within the correct range, but the design of the edges is not yet involved. And do you only use the center when wearing glasses? Not.

If the spherical surface did not need to be evaluated before (because theoretically, each position of cheap eyeglasses near me has one degree), then non-spherical means there is a special design. How to verify whether such a special design is reasonable?

Why hasn't anyone evaluated it? Because it's too complicated, and the change in the degree of the surrounding area is not the purpose. It's only when the human eye turns around that it can see clearly.

This requires two elements: the overall photometric distribution map of the lens and the optical path changes caused by human eye rotation. Each person's eye structure determines that there will be different changes in the distance between the eyes when rotating to the periphery, which requires personalized optimization. Unable to solve this problem, the inventory list can only remain positioned as an "entry-level" product.

The overall effect of low degree is quite good, with a smaller field of view for height and astigmatism, which is consistent with the analysis.