As one ages, the need for corrective vision tools increases. Over time, one’s eyes simply start to have problems. The ability of sight can decline over time. One condition that occurs as people age is known as presbyopia. This is where the eyes have difficulty focusing on items within a close proximity. This condition occurs because the flexibility of the eyes decreases with age. Typically, with this condition, bifocals will be needed at some point. In the past, wearers of bifocals could only opt for glasses. However, today people needing bifocals can also choose contact lenses.
Bifocal contact lenses are able to work just as bifocal glass lenses do. Within each contact lens are two different powers of glass. This makes it possible to focus the eyes in two different manners. One of these would be for distance while the other is for seeing objects close up.
One particular kind of bifocal contact lenses feature a concentric design. With this configuration one of the adjustments occurs in the middle of the lens. The second adjustment occurs in the outside area. This may sound rather difficult to use but actually the eyes adjust rather quickly and can learn how to use the ring of the lens.
A second type of bifocal contact lenses are aspheric lenses. This particular type of contact lenses features a more gradual transition between the two different focuses. The pupil area of the lens actually contains the two different powers. The eye is actually able to learn which focus to use at which time.
The translating lens is the third kind of bifocal lens. Of the three kinds, this is the most similar to the way a bifocal glass lens is made. The near correction is placed towards the bottom part of the lens. On the other hand, the distance correction is placed toward the top.
To easily get bifocal contact lenses or another variety, try buying your Contact Lenses Online.
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