Eyeglass is worn to help a person with eye problems to see well. Without eyeglasses, a person with a severe vision problem will not be able to see clearly. Today, technology makes it possible to use the internet to shop for eyeglasses. Online stores always sell eyeglasses at cheaper prices compared to traditional brick-and-mortar stores. If you want to save money, it is recommended that you buy eyeglasses from the online store. One benefit of shopping online is that you get to choose from a wide range of eyeglasses. You are not limited to only a few eyeglasses when you shop online. You can add any coating you want to your eyeglass. Some of the coatings that can be added to an eyeglass lens include anti-reflection, anti-scratch, photochromatic, etc. The anti-reflection coating prevents the sunlight from refracting from the lens. It is not good for the light to refract from the lens because it obstructs the vision of the person. The light will shine into the eyes of the wearer and cause him to unable to see clearly. When the person is unable to see clearly, he cannot steer the car in the right direction. The anti-reflection coating is affordable and costs a few dollars. The anti-scratch coating protects the lens from scratches and prevents it from becoming worn out faster. Without the anti-scratch coating, the eyeglass will get scratched easily. It can get scratched if you use paper such as paper towels, tissue paper, or plain paper to rub the lens. It can also get scratched when you use your shirt to wipe the lens. If it drops on the ground, the eyeglass can also get scratched. To avoid scratches, you must add an anti-scratch coating to the eyeglass. The photochromatic coating protects the eyes from the sunlight. It prevents the eyes from getting the harmful effects of the ultraviolet ray. The ultraviolet ray can cause the eyes to develop diseases. When the eyes are exposed to the sun for more than 4 hours per day, there is a high risk that they will get diseases. To prevent this from happening, you need to add a photochromatic coating to your eyeglass.