A single vision disorder is an eye problem where the person may have only one problem with their eyes. Some of the most common of these problems include presbyopia, myopia or hyperopia and can easily be fixed with a common prescription. While these are the most common eye issues, there are also many people that suffer from multiple eye problems at the same time. When a person has multiple issues they cannot get the simple prescription, but instead must get a combination to help them see. Some of the most common of these types of lenses include bifocal, trifocals or progressive lenses. With recent technology these are also available through contact lenses and users can be fitted for both.
When thinking of a bifocal glass the most common thought that comes to mind is that they are only for the elderly. While they are more common among elderly people, due to the eye breaking down over time, they are also used for people who suffer from multiple eye problems. These are the lenses that are easy to spot because of the line across the middle of the lens. This lens is used to separate the distance that the user uses each part of the lens. The upper part of the lens is used for distance and the lower part of the lens is used for seeing up close or reading. Many new bifocal users often have a hard time adjusting to this type of lens and may complain of headaches or dizziness.
A trifocal lens is just like it sounds three lenses in one. What the trifocal lens does is at a middle portion of a lens that is used for viewing things at an intermediate distance, which is anywhere from approximately 2 feet to 20 feet. The trifocal lens is a common choice among people who work on computers for long periods of a time, as the middle lens is used extensively during their work day.
One choice that many users are making is the varifocal glasses or contact lenses. What the varifocal lenses do is provide a gradual change throughout the lens from distance and have no visible lines. Many people who have tried the varifocal glasses love the ability to see things at multiple distances, without the visible lines in the lens like the bifocal or trifocal lenses. These lenses are becoming more and more popular each year as sales have continued to rise.
If you suffer from multiple eye problems it is important to get glasses that fit your basic needs. While bifocal and trifocal lenses do their job effectively, many users like the new varifocal lenses as they offer more style with less of the irritation as the other two lenses.
Do you suffer from presbyopia or any other kind of eye disease? If so you may be interested in information on varifocal contact lenses . For this more valuable information on please visit https://www.glassesca.com/