A Quick Guide on Progressive Glasses
Progressive eyeglasses feature seamless increased magnification from the lens’ top down to the bottom to help you see clearly at every distance while only using a single pair of eyeglasses. You need to look through the upper part of the lens to see objects from a distance, the middle so you can focus on the intermediate items, and the lower part to see stuff up close. The prescription gradually changes across the surface of the lens to offer a gentle transition.
These lenses may come in handy for people who use single-vision glasses for distance because of astigmatism, farsightedness, or nearsightedness together with reading eyeglasses for close-up work because of presbyopia.
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Are Progressives and Trifocals the Same?
No. Trifocals and bifocals have three or two different levels of magnification with a visible line separating them. You cannot find these visible transition lines in progressives. The truth is that there are many people who opt for progressive glasses since they don’t have the old-fashioned lines that are found on trifocals and bifocals.
However, there is another reason why the seamless transition is essential. That smooth transition between faraway and close-up viewing prevents that image jump people often experience with trifocals or bifocals. It is where objects change abruptly in apparent position and clarity when your eyes are moving across the lens’ prescriptions.
Are Computer Glasses Also Progressives?
People working long hours in front of the computer can take advantage of the computer glasses, the subset of progressive eyeglasses that allots more space for intermediate distances on the lens.
Computer eyeglasses have correction especially made to focus on computer screens that are often positioned at a distance of approximately 20 to 60 inches from the face. These special types of progressives can help lower eye fatigue and eye strain and let you switch your focus easily between printed pages, computer screens, and whiteboards.
Common Downsides of Progressive Lenses
There is a bit of a learning curve involved when using progressive eyeglasses, which can be bought in the Crulle online shop. Since there is no visible line that will serve as your guide, you need to train yourself into looking out of the right part of the lens for the specific task you are doing.
