Free torus design and free-form surface design are both upgrades to the current mainstream non-spherical lenses. Compared to traditional non-spherical designs, free torus and free-form surface designs provide more detailed optimization of the lens, resulting in fewer changes in edge shape when wearing cheap eyeglasses near me again.

Generally speaking, the ranking of lens edge deformation degree is spherical> non-spherical>double non-spherical>freeform torus>freeform surface. Due to the use of a free torus design, the clear field of view of the lens has been greatly improved, and the lens is also thinner and flatter.

Having said so much, I believe everyone will have a deeper understanding of glasses fitting, and I also hope that the knowledge and recommendations from the formation leader can help everyone.

For people with myopia, although scientific eye use is very important, a good pair of glasses cannot be ignored. If you are highly myopic or have both myopia and presbyopia, it is recommended to use progressive lenses, which are beneficial for your eyes.

The most important thing when wearing myopia cheap eyeglasses near me is the prescription sheet! Optometry sheet! Optometry sheet! Important things are to be repeated 3 times! Firstly, you need to understand several key parameters, including myopia degree, astigmatism degree, astigmatism axis, and pupillary distance.

If the degree of the glasses you are currently wearing still exists and has not changed (usually with small changes after adulthood, but also with many changes in degree, astigmatism, and even pupillary distance, it is possible that the previous measurement was inaccurate), you can directly use the previous optometry degree.

If you find that you cannot see clearly or have ghosting when wearing the lenses, you need to go for another light test. Therefore, the degree is more accurate.