Glasses Developed To bring better Protection

Glasses are generally matched with the vision problems to be corrected. Simple myopia, hyperopia and presbyopia require spherical mirrors, while astigmatism requires cylindrical mirrors. Shortsighted people need concave lenses, while those with hyperopia and presbyopia need convex lenses.

Glasses can correct a variety of vision problems, including myopia, hyperopia, astigmatism, presbyopia or strabismus, but they cannot cure or cure these problems. Other types of glasses include goggles, sunglasses, goggles, etc., providing various protection for the eyes.

Glasses were made of crystal in the early stage, and then glass. Some fiber lenses can block more ultraviolet rays than glass lenses, bringing better protection to the eyes. The plastic or fiber lens can be coated with anti-scratch film to make the lens have the same anti-scratch force as the glass lens. Various coatings, such as waterproof and non-reflective coatings, can bring convenience and better visual effects to the wearer.