It Is Interesting to Know

One pair of eyes must last you as long as you live. Therefore, each one of us should take the best possible care of our precious eyes. All of our five senses are important - seeing, tasting, hearing, touching and smelling. But none can compare with seeing. It is estimated that nearly seven eighths of all our knowledge comes to us through our eyes.

What is the optometrist or ophthalmologist doing when he so carefully inspects the inside of your eye and gives you numerous tests? He is examining your eyes for possible disease conditions and looking for possible defects in your vision.

For the most part, eye errors are caused by slight imperfections of the eye-ball, or by the failure of the eye muscles to act as they should. The most common errors are farsightedness, nearsightedness, astigmatism, and double-vision. These errors of the eye, in most cases, can be fully corrected by lenses which act on the light as it enters the eye in such a way as to correct the imperfect action of the eye.

These lenses are made of the finest, clearest, transparent material which man has learned how to make. This material is like none other in the world, for it can be made to bend the light just as the optical expert wants to bend it. It has been calculated that more than eleven million different kinds or shapes of lenses can be made. So it can be truthfully said that it is possible to make a lens for every human need, or degree of error.

These lenses are among the finest and most accurate devices made by human hands. Among the different kinds of lenses, none is more splendid or useful than the multifocal lenses which include bifocals, trifocals, and varifocal lenses.

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