Bifocals
Bifocal Contact Lenses
As people age, their ability to focus on near and far distances, weakens, hence the need for bifocal contact lenses. The medical term for this is Presbyopia. Once adults hit their 40s, they begin to notice a lack of ability to focus. This is a natural part of ageing and is progressive. Other symptoms of this condition are eyestrain, headaches and squinting. What bifocal contact lenses do is provide patients the balance to look at near and far distances with clarity. This is why bifocal contact lenses have two different prescriptions in them.
Do you find that you have the need to hold reading materials at arm's length in order to read these clearly? Do you find that when engaging in work such as needlepoint or writing, your eyes get easily strained or fatigued? You should check with your eye doctor to see if the grade of your eye glass has increased or changed.
In the normal performing eye, the natural lens, which is shaped like a large lentil (about 10 mm in diameter), is attached to muscles which contract or relax to change the shape of the lens.The changing lens shape helps light to be focused in response to the need for clarity.For the adult with Presbyopia, the muscles have begun to lose their flexibility to focus. With this loss, the eyes have a harder time in concentrating.
They way bifocals work is, the main part of the lenses will have the prescription for nearsightedness or farsightedness. Whereas the lower portion of the lens will hold the stronger near prescription for close work.
As you age, your eyes will lose its ability to focus strongly. So bifocals or progressive lenses will provide you a great deal of ease as well as convenience for you will be able to carry two prescriptions in only one pair of eyeglasses.
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