Eyeglasses are worn to correct the vision of a person. If you suffer from a vision problem, it is important that you wear the eyeglasses so that you don’t have to strain your eyes to see things. Many people that have good vision also wear eyeglasses. The eyeglasses worn by people without vision problems don’t have any power. Before buying the eyeglasses, you need to obtain a prescription from the optometrist. The prescription contains information about the power for your left and right eyes. Besides the prescription information, you have to obtain information about the papillary distance. The papillary distance of the eyes can be measured by the optometrist. You can also measure the papillary distance by wearing the eyeglass.
You will be able to choose from a wide range of lenses. The common eyeglasses lenses that are sold at the optic stores include polycarbonate, glass and ultra index lenses. Polycarbonate lenses are made from plastic so it is shatterproof. It won’t shatter when you drop it on the ground. If someone accidentally steps on it, it also won’t break. It is almost 100% shatterproof. It is stronger than the acrylic lens. The acrylic lens is 17% stronger than the glass lens. Polycarbonate lens is lighter than the glass lens and easy to carry around. It is thinner so it is suitable to be used to make eyeglass for a person that suffers from high prescription. The higher the prescription, the thicker the eyeglasses will be. If you want people to notice you, you can use the polycarbonate lens. If your prescription power is very thick, you need an ultra-thin lens. In this case, you should buy the ultra-high index lens. The ultra-high index lens is thinner than the polycarbonate high index lens. It is also more expensive by a few dollars than the polycarbonate lens.
If you want to need a pair of new eyeglass, you can buy it from the online store. The online store offers a wider range of eyeglasses compare to the local store. You will find that the eyeglasses at the online stores are cheaper by 5 – 7 times than the local eyeglasses store. The online store is able to offer the eyeglasses at a cheaper price because it doesn’t have to pay the rental fee and workers to maintain the store. Most of the online stores don’t have inventories. When you place an order, they will order it from a manufacturer and send it to you.