Park Ridge Illinois Eye Doctor
Corrective lenses help to fix refractive errors. They work by helping the eyes focus light onto the retina when the eye cannot otherwise do it on their own. Corrective lenses bend the light rays before they enter the eye to the degree required depending on the level of vision correction needed. The prescription itself is based on the degree to which light rays are bent and then measured in diopters. A higher prescription requires more bending. Those who are nearsighted have an elongated eyeball, which requires a concave lens. This increases the distance in which light travels so the image can be viewed clearly on the retina. This is also known as myopia. Our
Park Ridge Illinois eye doctor can work to correct both near and farsightedness.
Farsightedness happens when the eyeball is shortened and requires a convex lens. The convex lens reduces the distance light travels. In the case of astigmatism, a cylinder prescription lens is used to create multiple focus points. And with presbyopia, which is trouble seeing closely and which happens with age, a monovision or multifocal lens is used. Our
Park Ridge Illinois eye doctor can tell you more about which condition you have and how to treat it. Corrective lenses used to treat vision issues include contact lenses, eyeglasses, and intraocular lenses. Eyeglasses use a frame to hold both lenses and come in different types, such as bifocal, monofocal, trifocal, and progressive lenses. Monofocal lenses are most common, with only one focal point. The wearer can see both near as well as far.
Bifocal lenses are divided into two parts. One part is for viewing far away, and the lower part usually holds the close up near vision. The lines are visible on the lenses. Trifocals allow for three vision circumstances - Far, near and middle. And progressive lenses are like trifocal and bifocals except they allow for a smoother transition between focal points and no line bisecting the lenses. Our
Park Ridge Illinois eye doctor can prescribe all four types of lenses.
Chicago My Optical
806 Civic Center
Niles, Illinois 60714
(847) 241-4563
By Chicago My Optical
March 20, 2017
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