As the aspheric lenses are thinner and flatter, they are suitable for strong prescription. Aslo they can give people better vision than the ordinary lenses. What’s more, they can let you look better due to the aspheric lenses lessen nearsighted eye minification and farsighted eye magnification. If you have a strong prescription, the aspheric lenses are your best choice.

I wanna buy my new prescription glasses online. I have a single vision prescription which is SPH-6.50/CYL-1.00 for right eye and SPH-7.00/CYL-0.50 for left eye, which index aspheric lenses is better for me? 1.61 or 1.67?

Hi, Let me answer your questions. You said that you had prescription eyeglasses for weeks, but you want to change it to contact lenses with no money, I think it is possible. Some of the online shops which sell eyeglasses have business with the old change new one, also you can adopt your eyeglasses to contact lenses, they can select suitable contact lenses to you according to your prescription.