Different types of multifocal lenses

Progressive addition lenses are mostly great for all distances. With soft design, these lenses provide acceptable and comfortable vision. Some eye doctors also think that progressive lenses offer much more natural and usable vision than bifocals and trifocals. Unlike bifocals and trifocals, progressive lenses have as many as nearly 20 focal points. There are many notable brands available such as Zeiss. Incorrectly positioned progressive lenses can cause blurry vision. Plastic markers can be used to check the right positioning of progressive lenses, both side to side and up and down.

Bifocal lenses are designed to focus at two distances and trifocals are made to help at three distances. Some people may wonder that the two types can be interchangeably used. This is an improper way. Bifocal lenses may cause problems if their lines have not been properly fitted. For example, the line can be in the middle of the vision even if the wearer looks straight ahead.

For golfers, bifocal eyeglasses may meet a dilemma that these people need to both read the score card and swing. Neither bifocal lenses nor progressive lenses can offer satisfying vision for both of the two activities. In this case, more than one pair of glasses is needed.

The buying of over-the-counter reading glasses requires several tips, since there are possibly flaws and distortions. These glasses are ready-made so that they are more likely to be unsuitable for some people than prescription lenses from eye doctors. In fact, reading glasses can not provide good distance vision. Even with over-the-counter reading glasses, regular eye exams should not be skipped.

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