Wearing multifocal contact lenses gives individuals the ability to focus through different strength prescriptions, but through the same lens. The technology uses a single lens for each eye rather than multiple lenses. One of the most common types...
Multifocal contacts are lenses that can help you see both near and far objects. There are two prescriptions built into the single lens and are intended for patients with presbyopia. Presbyopia occurs when individuals over the age of 40 have...
When you have a cataract, the natural lens of the eye becomes cloudy, impairing your vision. In cataract surgery, the natural lens is removed and replaced with an intraocular lens implant. The natural lens of your eye is able to focus at varying...
When small details and fine print become difficult to read or when a person has to hold printing at arm's length to read, he probably needs bifocals. Presbyopia is a condition that affects people beginning around the age of 40 and is corrected by...
Toric lenses are contact lenses prescribed to correct astigmatism. Astigmatism, a common vision disorder, results when light hits the back of the eye in two focal points instead of one spot. Toric lenses redirect the light coming into the eye and...
Cataracts, clouding of the lens that adjusts to help people see objects close up and far away, develop with age. Over half of all people 80 and older have cataracts or have had cataract surgery, according to 2009 data from the National Eye...
A cataract describes a clouding of the eye lens, which focuses images on the nerve tissue at the back of the eye. A significant cataract causes loss of visual clarity and dimmed vision. The definitive treatment for a cataract is the removal of the...
According to the Cleveland Clinic, about 2 million cataract surgeries are performed annually in the United States, and in nearly all of cases, the patients receive intraocular lenses after the surgeries. Before the development of intraocular...
Eyeglass prescriptions must be precise. Correcting vision allows little room for mistakes. The first time you put on a new pair of glasses, you expect your vision to be clearer and sharper than with your previous prescription. If, instead, your...
As you age, it is a natural progression for changes to occur with your eyes. Once you reach your 60s, your eyes will likely not perform as well. Poor vision as you age may affect your ability to drive and read without glasses. Also, you are at an...
Many people in their 40s start having problems reading, and they may need multifocal lenses to improve reading vision. Trifocals offer a top for distance, a middle section for the distance of a dashboard and a bottom portion for reading up close....
According to the American Optometric Association (AOA), nearsightedness (myopia) is a vision impairment in which faraway objects are out of focus but objects near the eyes are clearly viewed. Nearsightedness is caused by either an excessively long...
If you are 40 years of age or older, you may be having difficulty with close-up vision. This is a natural phenomenon that occurs as people mature. The medical name for it is presbyopia, and the condition is caused from thickening and reduced...
People who need bifocals no longer have to wear little half-glasses in addition to their contacts. According to the Contact Lens Manufacturers Association, multifocal contact lenses are available in bifocal, trifocal and progressive levels....
Aspheric contact lenses are a newer design concept, filling a niche for clearer, crisper vision for certain patient populations. From the early days of hard, unbreathable lenses to the highly oxygen-permeable soft contact lenses of today, aspheric...
Eyeglasses were first used in 1000 A.D. and have changed tremendously throughout the ages. Eyeglasses continue to be popular, despite advances in technologies to improve vision, such as contact lenses and laser surgery. Many that use eyeglasses...
Toric contact lenses correct astigmatism caused by a slightly irregular-shaped cornea. They differ from regular lenses in that toric contact lenses have two powers: one to correct astigmatism, the other to correct near-sightedness or...
