What Shall You Know If You Need Bifocal Glasses?
As the name implies, bifocal glasses is a kind of glasses that have two focus –one helps wearer see distance while the other helps wear see closer objects such as reading book. So, those glasses are often applied for people who suffer two vision problems such as prebyopia and myopia. This is the reason why bifocal glasses are often applied for older people (usually over 40 years old).
Generally speaking, bifocal are made of two lenses at one. The bottom part of the lenses helps the eyes see close objects. And the top part of the lenses helps the eyes focus distance focus. With this kind of bifocal glasses, people who suffer two vision problems no longer need to change their reading glasses to regular glasses constantly for a better vision.
Nevertheless, you must learn how to automatically look through the proper part of the glass in your daily life. Or there are somewhat difficult to get used to for people first wearing.
If you not get used to the bifocal glasses, it may be difficult when you walk down stairs, because the glasses have plus segment which can magnifies objects that make things appear closer to wearer than they are.
If you do not get used to wearing the bifocal glasses, you may suffer image jumps up, because the eyes need to cross the junction of the distance and near segment. Those image jumps may make you eye tired easily or make you hard to recognize what you are looking for.
What’s more, bifocal glasses usually have visible line on the lenses that make the glasses not as beautiful as regular glasses or eyeglasses. Luckily, there comes one kind of no-line bifocal or sometimes called progressive glasses. They have the same function for vision aids, and they have no such visible line as bifocal glasses that segment the lenses into two parts.
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