The folding part of the eyeglasses frame should not be too loose or too tight, the bending degree and angle of the eyeglasses online cheap legs should be appropriate, and the eyes should be aligned with the optical center, otherwise, it is easy to have a prism effect and deform when lookin

The cheapest eyeglasses frame is in long-term direct contact with human skin and greatly affects the wearer's image, so the choice of frame cannot be arbitrary.

How is a pair of ultra-light TR material eyeglass frames made? First, let's explain. Eyeglasses frames on eyeglass mart are mainly classified into metal, plastic, and natural materials based on their materials. The mainstream plastic materials include TR, PV, and sheet metal.

Not everyone can handle a large frame, it depends on whether the distance between the pupils and the brightness of the eyes are suitable. Not everyone is suitable for large-frame glasses, cheapest eyeglasses need to be matched according to their face shape and style.

A lens with a convex or concave shape cut from a sphere is called a spherical lens. Due to the inevitable occurrence of aberrations in spherical eyeglass online lenses, there have been lenses that correct the shortcomings of spherical lenses, namely non-spherical lenses.