Martin Smith
For year’s people who had both nearsightedness and farsightedness had to suffer with eyeglasses that had thick lenses with a line across them. Not single were the glasses heavy but the frames for glasses in general were to say the least, unattractive. The other problem with the bifocal lenses was adjusting to them. You either have to look up or look down especially active downstairs. People often experience dizziness while adapting to the bifocal lenses.
For years people who needed bifocal lenses had only cardinal choice, eyeglasses. equal when contact lenses came on the market, bifocals standing could only be had in eyeglasses. That was past and this is now. Now contact lenses offer as many choices if not more choices than for those who wear eyeglasses. Now to the joy of many, there are central contact lenses available. Bifocal contact lenses are available in soft, rigid, gas permeable materials.
Who needs to use bifocal lenses? People who have trouble focusing on objects that are near. They suffer with something called Presbyopia. This doesn’t usually develop after age 40.
There are various types of lenses and they are described below.
- Alternating design- these are related to bifocal glasses, half the lens has distance powers and the opposite half has powers for near objects.
- Simultaneous Design-these lenses try to blend the powers of both distant and near sight prescriptions, they fill in the pupil area. Your eyes adapt and learn to interpret the circle power choice depending on how intimate or far you are looking.
- Concentric Design-These are the radial of contact lenses. The lens works on neighboring vision while external part works on distant vision correction or vice versa.
- Translating Design- these are also precise similar to central eyeglasses, the distance correction is preceding the near correction. A line separates the lenses. The lens is even on the bottommost to keep it from moving around in your eye when you blink.
- Asferic Design-Distant and near vision are located at the center of the lens. Near correction is at the center while distance correction surrounds it. They can be reversed in whatsoever situations. The doctor will help you decide that.
- Mono-vision Design-You wear cardinal power lens in one eye and the other in the other eye. Distance vision is usually worn in the dominant eye. Again your doctor will be competent to determine this with an examination.
There are also simultaneous vision contact lenses. These lenses allow the eyes to focus on both neighboring and far objects at the unvarying time. Near and distant correction is in concentric rings. Since the extreme and near parts of the lens are in sight all the time light from some distant and neighboring objects can be focused on at the same time.
There is a problem with synchronous vision lenses. While the eye is seeing through the lens some floodlit from distant objects will go finished the near vision, and the floodlit from near objects will go finished the distant part of the lens. The eye takes both in focus and out of focus at the same time. It is up to the brain to figure out which is the desirable image.
Contact lenses whether bifocal or not can single be obtained with a prescription. finished a comprehensive examination your eye doctor will determine whether you are a candidate for central contact lenses and what specific type might be far for you. As with any contact lens there is an adjustment period and it might take more than one try before you get lenses that are the right fit and comfortable for you.
The reality though is that central contact lenses may not be for you, at least in the contact lenses that are now available. Don’t give up. If you really want contact lenses and you need bifocals, do your research and keep up to date on the types of lenses available for you.
If you want to try contact lenses whatsoever companies have liberated trial periods of up to a week for you to try the lenses and see how you same them. There are resources available online, through your eye care physician, and in some cases right from the manufacturer. There are discount contact lens sites and whatsoever manufacturers offer coupons to you for trying them out. Your budget will undoubtedly play a part in your decision about central contact lenses.
Ask friends or family members who have contact lenses what their experience has been like for them. Of course, not everyone has the same experience but in general, the information could help you and your physician make a determination.
Bifocal contact lenses are available for people with astigmatism. Toric contact lenses in particular come in both colors and disposable types. Consult with your eye care professional, as some professionals are not comfortable with fitting Toric lenses.
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