The discount eyeglasses online pair has a price advantage, convenience, and a wide range of styles to choose from. More and more friends are choosing the cheapest eyeglasses online pair.

Choose the material and shape of the frame. The characteristics of aviation titanium material are lightweight, good elasticity, and good corrosion and fatigue resistance. Classic frame shape, suitable for any face shape, versatile for beautification.

The main parameter of the lens is the refractive index. The refractive index of a lens is a refractive property of an optical lens, and different refractive indices represent different refractive abilities of the lens. Generally speaking, the higher the refractive index, the thinner the lens, and vice versa.

When choosing the refractive index of a lens, it is recommended to choose the appropriate refractive index based on the individual's degree of myopia. If the degree of myopia is below 200 degrees, a refractive index of 1.56 can be chosen; If the degree of myopia is between 200 and 400 degrees, lenses with a refractive index of 1.60 can be selected; If the degree of myopia is between 400 degrees and 600 degrees, lenses with a refractive index of 1.67 can be selected; If the degree of myopia is above 600 degrees, you can choose discount prescription glasses with a refractive index of 1.74.

The optometry data is an optometry certificate issued by a legitimate optometry agency. Compared to offline glasses, lens processing has a shorter lens-matching cycle.

Overall, online glasses matching has many options, short cycles, high cost-effectiveness, and guaranteed after-sales service. Online glasses matching is an infallible choice for friends.