People with presbyopia are supposed to buy reading glasses from eye doctors, rather than simply pick up one pair from markets. On one hand, those one-size-fit-all reading eyeglasses are issue for people with different prescriptions in two eyes, resulting in side effects such as headache. On the other hand, regular eye exams from eye doctors can detect underlying vision problems as early as possible.
There are many warning signs in children that may indicate the need for eyeglasses, including close TV watching or book reading, squinting, frequent eye rubbing, light sensitivity, excessive tearing and poor performance in school. Meanwhile, researchers recorded the performance of these people in finishing font tests. The result showed that people with computer glasses had higher work productivity than the other individuals. Wearing computer glasses should both provide good computer vision and eliminate Computer Vision Syndrome.
Regular computer users may feel uncomfortable with bifocal eyeglasses or reading glasses. In fact, computer screen reading requires intermediate vision, which can be provided by computer glasses, progressive lenses or trifocals. In some cases, occupational lenses are needed to provide task-specific vision. Also, not all eyeglass lenses provide proper anti Rad coating, such as some plastic lenses. Those lenses offer Rad protection only if they are applied with blue color coating. One superior lens material is polycarbonate, which has built-in UV and Rad protection.
Computer glasses have special designs that are not suitable for regular wear. A single vision lens with special power provides both the most comfortable computer vision and the largest vision field. This type of computer lens design reduces the risk of eyestrain, blurred vision and unnatural posture. For people with presbyopia, occupational progressive lenses or lined trifocals with larger intermediate zone provide the right solution. But they are not suitable for driving since the distance zone is narrowed. Occupational bifocal lenses offer a top lens part for intermediate vision and a bottom part for near vision.
For example: last week I purchased a computer/reading progressive eyeglass from the online shop- Prescriptionglassesonline.net. It could supply the CR-39 Free Form “Distortion Reducer” Tinted Progressive Lenses to process with rimless frame NB3008. The light or indoor rose tint is very beautiful, moreover is that this kind of lens just is $198 included anti-reflective and anti-Rad coating. Friends, I don’t believe ordering things online due to many times bad experience before. However this company has restored my faith in the internet.