As time goes on, numerous individuals notice age-related vision issues, which are usually completely normal. Some people become frightened when they notice such changes, but the latter are not typically indicative of a serious problem. When reading or driving become difficult, however, it often leads to frustration. Fortunately, individuals who need several different powers in one pair of glasses can invest in trifocal lenses.
The first bifocals were invented by Benjamin Franklin in the 1780s. Prior to that, those suffering from presbyopia had to use two pairs of glasses. The aforementioned condition is the eye disorder that results of the need for bifocals. The first bifocal models had a line across the width of the lens. The top portion was used for distance vision, while the lower portion was used for reading.
As people reach their fifties, intermediate vision sometimes fails, depending on how the aforementioned presbyopia develops. When bifocals are used, a person can see near and far, but blurry arm's-length vision is often still a problem. A solution for this issue was developed in the nineteen forties. This solution was the trifocal lens.
Trifocals have a second lens segment that is placed over the near vision section in a long-distance lens. This technically gives the glass 3 different powers. For this reason, individuals have clear vision in 3 different fields.
There are two kinds of contemporary trifocal lens designs. These are executive style and flat top. Ribbon shaped segments are seen with executive style, which feature lines through the width of the lens. Designs referred to as flat top have round sections and are unlined. Many individuals enjoy wearing models without the tell-tale lines.
Advancements in modern technology provide a vast array of multifocal contacts as well. Such devices are beneficial in the sense that they provide the same 3 clarified vision feels as do traditional eyeglasses. Ultimately, any person who has experienced age-related vision problems should make an appointment with a qualified optometrist to discuss using trifocal lenses.
The first bifocals were invented by Benjamin Franklin in the 1780s. Prior to that, those suffering from presbyopia had to use two pairs of glasses. The aforementioned condition is the eye disorder that results of the need for bifocals. The first bifocal models had a line across the width of the lens. The top portion was used for distance vision, while the lower portion was used for reading.
As people reach their fifties, intermediate vision sometimes fails, depending on how the aforementioned presbyopia develops. When bifocals are used, a person can see near and far, but blurry arm's-length vision is often still a problem. A solution for this issue was developed in the nineteen forties. This solution was the trifocal lens.
Trifocals have a second lens segment that is placed over the near vision section in a long-distance lens. This technically gives the glass 3 different powers. For this reason, individuals have clear vision in 3 different fields.
There are two kinds of contemporary trifocal lens designs. These are executive style and flat top. Ribbon shaped segments are seen with executive style, which feature lines through the width of the lens. Designs referred to as flat top have round sections and are unlined. Many individuals enjoy wearing models without the tell-tale lines.
Advancements in modern technology provide a vast array of multifocal contacts as well. Such devices are beneficial in the sense that they provide the same 3 clarified vision feels as do traditional eyeglasses. Ultimately, any person who has experienced age-related vision problems should make an appointment with a qualified optometrist to discuss using trifocal lenses.
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