Progressive computer lenses have a larger intermediate zone than regular progressive lenses. They have different powers for your distant, intermediate and near vision needs. Progressive computer lenses are no-line multifocal lenses. They are comfortable for young and older computer users alike. Single vision computer glasses reduce the risk of eye strain, blurred vision and unnatural posture that can cause neck and back pain. This lens power is customized for your specific needs and preferred computer viewing distance. The simplest computer glasses have lenses with the same power throughout the entire lens. Because these lenses are prescribed specifically for computer use, they are not suitable for driving or general purpose wear. There are several types of eyeglass lens designs for computer glasses. This intermediate pupillary distance is not customized in store-bought reading glasses.Īnd store-bought reading glasses typically provide little or no protection from blue light.Ĭustom computer glasses provide a wide, clear view of your digital devices, reduce focusing effort, and offer the added benefit of blue light protection. Provide the optimum amount of magnification for viewing your digital devicesĪlso, custom computer glasses position the optical center of the lenses directly in front of your pupils when using your devices. Good computer glasses, on the other hand, do three things: Store-bought reading glasses are simply magnifying lenses in a frame. (The optimal magnification depends on how far you prefer to sit from your computer screen and how close you hold your digital devices.) Generally, computer glasses have about 60% the magnifying power of reading glasses. But they often don’t have a large enough intermediate zone for comfortable computer work.įor these reasons, many people try reading glasses for computer use. Progressive lenses and trifocals offer some help for intermediate vision. But intermediate vision (needed for computer use and seeing your smartphone) often remains a problem. If you are beginning to experience presbyopia, bifocals can provide clear distance and near vision. The longer you stare at your computer and phone screens, the more fatigued this muscle and your eyes become. But focusing on intermediate and near objects still requires effort by the ciliary muscle in your eye. If you are under age 40 and wear prescription eyeglasses, these glasses will provide clear vision at all viewing distances. This is considered the intermediate zone of vision - closer than driving (“distance”) vision, but farther away than reading (“near”) vision. Computer glasses vs reading glassesĬomputer glasses differ from regular eyeglasses or reading glasses in a number of ways.įor greatest comfort, your computer screen and digital devices should be about 20 to 26 inches from your eyes. Research shows that even small amounts of uncorrected refractive errors can cause computer vision problems and reduced productivity. This is when we begin to experience symptoms of presbyopia - the normal age-related loss of near focusing ability.Ĭomputer glasses should also correct any nearsightedness, farsightedness or astigmatism you have. It's particularly helpful if you’re over age 40. This is comforting for people of all ages. RELATED READING: What is asthenopia? How computer glasses workīasically, computer glasses reduce how much focusing your eyes must do when viewing digital devices. But laboratory studies have shown that blue light can damage cells in the retina that are essential for sight. More research is needed to determine if long-term exposure to blue light from digital devices increases the risk of macular degeneration or other eye problems later in life. Some computer glasses also shield your eyes from potentially harmful blue light emitted by digital devices. Wearing computer glasses can reduce the risk of eye muscle fatigue and discomfort caused by prolonged screen time. The tiring of these muscles leads to discomfort and visual symptoms. It also tires the extraocular muscles surrounding our eyes that control eye position and alignment. This causes strain and fatigue of the ciliary muscle inside the eye that controls the shape of lens and the focusing power of the eye. Our eyes (and bodies) aren't made for staring at a near object - like a glowing computer screen - for long periods of time. Digital eye strain is also called computer vision syndrome.
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