Each of these lens coatings are important in consideration and serve their own specific purpose.
Five common eyeglass lens coatings are:
- Scratch resistant coating
- Ultraviolet protective coating
- Anti-reflective coating
- Tinted lens coating
Here are descriptions of these popular eyeglass lens coatings.
Scratch Resistant Coating: For extra durability against everyday happenings and wear & tear, a scratch resistant coating is ideal. No eyeglasses are completely scratch proof but heightened resistance against incidental damage is valuable. This type of coating prolongs the life of your glasses by minimizing the possible damage from dropping, paper towel cleaning, or other issues owners of glasses deal with.
Ultraviolet Protection: Overexposure to ultraviolet rays can not only cause harm to the skin but also to the eyes. Numerous eye problems have been attributed to such overexposure. These include cataracts, pterygia, and pinguecula. Just as you can use sunscreen to protect your skin from harmful ultraviolet rays, you have the option to use protective coating on your eyeglass lenses to block UV rays from effecting your eyes. This UV coating is not visible to the naked eye and the addition of the protective dye brings UV protection to 100 percent. Some eyeglasses such as those with polycarbonate or Trivex lenses have inherent ultraviolet protection so extra lens treatment for UV is not necessary in these cases.
Anti-reflective Coating: To improve vision through lenses and eyeglass appearance, anti-reflective (or AR /anti-glare) coating is very beneficial. Anti-reflective coating eliminates reflections of light from both the front and back surface of lenses. With the elimination of reflective light or glare this coating also makes glasses look almost invisible, allowing for more focus on eyes and facial expression. AR coating is helpful for driving at night, providing sharper vision and less glare. Also improved are photographs, as the glare in the eye area that is so common in pictures would be eliminated.
Color Tinting: Glasses can be tinted in a variety of colors and can enhance cosmetic appearance of the wearer or slightly improve vision. Tinting is better applied to plastic lenses than glass, which is limited in the range of tint intensities and colors. Plastic lenses are typically tinted for the cosmetic purposes and fashion. With solid tent, coloration is applied equally to the entire surface of the lens and varies in range from very light to very dark (3%-85%). Gradient tints have darkest coloring on top of the lens, fading down to the bottom of the lens.
Reasons for different eyeglass lens coating range from style and fashion to protection of the eyes from harmful light. Enhancing the usefulness of eyeglasses can make quite a difference in the completion of common tasks. Whatever you want from your glasses be sure to discuss issues with your optometrist to make the best choice. Be sure to take proper care of glasses, especially the lenses, with proper cleaning and storage. Be sure to use products recommended by your optician when cleaning your lenses.