Many special purpose lens designs work well for computer eyewear. Because these lenses are prescribed specifically for computer use, they are not suitable for driving or general purpose wear. The simplest computer eyewear have single vision lenses with a modified lens power prescribed to give the most comfortable vision at the user’s computer screen. This lens power relaxes the amount of accommodation required to keep objects in focus at the distance of the computer screen and provides the largest field of view.
Single vision computer glasses reduce the risk of eye strain, blurred vision and unnatural posture that can cause neck and back pain, and can be used comfortably by young and old computer users alike. Another popular lens design for computer glasses is the occupational progressive lens — a no-line multifocal that corrects near, intermediate, and, up to a point, distance vision. Occupational progressive lenses have a larger intermediate zone than regular progressive lenses for more comfortable vision at the computer. But this leaves less lens area for distance vision, so these lenses are not recommended for driving or other significant distance vision tasks.
Other lenses used for computer glasses include occupational bifocal and trifocal lenses. These lined multifocal lenses have larger zones for intermediate and near vision than regular bifocals and trifocals, and the position of the intermediate and near zones can be customized for your particular computer vision needs. Your optometrist or ophthalmologist can help you decide which lens design will best suit your needs for computer glasses.
Lens Coatings And Tints
For maximum viewing comfort, the lenses of your computer glasses should include anti-reflective coating. Sometimes called anti-glare treatment, anti-reflective (AR) coating eliminates reflections of light from the front and back surfaces of your lenses that can cause eye strain. Also, computer glasses with photochromic lenses can shield your eyes from potentially harmful high-energy visible blue light from your computer screen and digital devices — and automatically darken in sunlight outdoors, too.
Your eye doctor may also recommend adding a light tint to computer glasses to reduce glare caused by harsh overhead lighting and to enhance contrast. For more details about anti-reflective coating and tints for your computer glasses, consult your eye care professional.
Where To Buy Computer Glasses
Resist the temptation to buy over-the-counter reading glasses for use as computer glasses. Because an accurate eyeglasses prescription is essential if you want to get the full benefits from computer glasses, it’s best to purchase this eyewear from a knowledgeable eye care professional.
Prior to scheduling your eye exam, measure how far you like to sit from your computer. Measure from the bridge of your nose to the surface of your computer screen. Bring this measurement with you to your exam so your eye doctor can use it to help determine the optimum lens power for your computer glasses.
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