Reading glasses are mainly used for reading to the people around the age of 40. The eyes of these people do not seem to focus up close like they used to. This condition is called presbyopia, a condition that decreases our ability to focus on near objects. Presbyopia occurs as the crystalline lens becomes less flexible, or the muscle that causes the lens to change becomes weaker. In this condition, you may need a pair of reading glasses.
Reading glasses can be divided into prescription reading glasses and OTC readers. For the former one, you should do is call your local eye doctor(USA | Canada | Australia | England | France | New Zealand ) and make an appointment for a comprehensive eye examination and get your prescription for reading glasses. In this way, you will get a pair of reading glasses which is precisely customize as your prescription. The later one is OTC readers. They are typically sold in retail locations such as pharmacies and grocery stores, but are also available in book stores and clothing retailers. They are available in common reading prescriptions in strengths ranging from +0.75 to +3.50 diopters. These glasses do not take into account the mathematics of the wearer’s distance prescription, often causing the distance to become blurry unless they are removed. If the wearer has little to no need for correction in the distance, may work quite well for seeing better during near vision tasks. But if the person has a need for correction in the distance, it is less likely that they will be perfectly effective.
When selecting a pair of reading eyeglasses, consider what you will be using them for. If you do a lot of outdoor reading, there are sunreaders available that are either polarized, tinted or UV protected. Computer reading glasses have become very popular because they are designed for a further reading distance and have the magnification area higher up, minimizing the need to tilt your head back to see through the bottom of the lens. Bifocals reading glasses, the mainstay of reading glasses, are only magnified in the lower portion of the lenses. No-line bifocals provide the same benefit, but instead of a distinct line between the magnified and non-magnified area, the magnification increases slowly as you lower your eyes. Half frames make it easier to see over the top of the frames, while full frames provide uniform magnification over the entire area. With all the types and styles available, you don’t have to look far to find a pair to suit your needs.