Astigmatism is a common vision problem. The cause of an astigmatism is a cornea or lens that is irregular in shape--usually the cornea. An astigmatism may be accompanied by near-sightedness or far-sightedness. You may not even know you have this...
Toric contact lenses are usually prescribed to correct astigmatism, a common vision problem. Toric lenses have special curves to help compensate and correct for astigmatism.
According to the University of Michigan Kellogg Eye Center, astigmatism usually occurs when the front of the eye -- the cornea -- is curved more in one direction than the other. The resulting distortion in one's vision is much like looking in a...
Astigmatism, which is an irregular curve of the cornea, is so common that more people have it than don't have it. The University of Michigan's Kellogg Eye Center notes that astigmatism is not a disease, but rather a visual disturbance caused by...
Toric contact lenses, designed for people who have astigmatism (irregularly shaped cornea), are similar to ordinary soft and RGP (Rigid Gas Permeable) lenses. In fact, the only difference is the shape. Toric contact lenses curve at different...
Many people are inflicted with a sight disability known as astigmatism, a condition in which the cornea of the eye is curved irregularly, leading to vision reduction. One of the best solutions to this problem is to obtain special contact lenses...
Toric contact lenses correct a common eye condition called astigmatism. The American Optometric Association describes astigmatism as a vision problem caused either by an irregular shaped cornea, which is the clear outer layer of the eye, or...
Astigmatism is a very common visual disorder created by abnormal or irregular curvature of the cornea, which causes light to bend irregularly as it passes through the lens of the eye, generating distortions in the formation of the visual image on...
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...
In approximately the year 1000, Italian glass blowers began making hand-held reading stones, much like today's magnifying glasses. The first actual pair of eyeglasses was not invented until nearly 300 years later, out of magnifying glasses and...
Imagine a world where your vision is blurry. You go to the optometrist and are diagnosed with astigmatism, a defect in the cornea (surface layer of the eye) that can wreak havoc on your vision. You refuse to wear glasses and your doctor provides...
Astigmatism occurs when parts of the eye (cornea, lens or the clear cover in the front of the eye) are abnormally curved, causing light to focus improperly on the retina (the part of the eye that converts images and light into brain signals). This...
Astigmatism results when your cornea or the lens inside your eye is irregularly shaped. When the curvature of the lens or the cornea is uneven, light cannot focus properly on the retina, causing blurred vision. This eye condition may be mild and...
In people with the eye disorder astigmatism, the light coming into the eye becomes focused in two places instead of being pinpointed down to a single spot at the back of the eye. This can induce blurry vision, headaches and eye strain. Astigmatism...
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...
Hard contact lenses are different than the type of lens most commonly worn today. Most soft lenses are designed for comfort and are usually more durable than hard contact lenses. But if you have astigmatism or are particular about the quality of...
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...
The contact lens prescription is essential for the proper vision correction and fit of the lenses. Without the prescription, you cannot, by law, obtain your lenses. You can, however, obtain your prescription from your eye care provider and then...
More commonly known as lazy eye, amblyopia is an eye condition in which an eye is not able to see clear images. Over time, the blurry vision in the eye causes the brain to ignore the vision in the affected eye and use the other eye for sole...
Various methods of correcting vision are available, the most popular being eyeglasses and contact lenses. The Vision Council of America states that three out of four adults need corrective lenses, and about 64 percent of adults wear glasses. In...
In order to understand what astigmatism is, and more specifically regular (versus irregular) astigmatism, let’s first get a basic understanding of what astigmatism is in general. The normal human eye has several structures that are...
About Astigmatism of the Human Eye Overview Astigmatism is a common eye condition, but severe forms can cause blurred vision. Astigmatism usually coexists with one or more other eye problems, such as myopia or hyperopia. It is easily diagnosed...
Focus contact lenses include the DAILIES line produced by Ciba Vision. DAILIES are disposable lenses designed to wear for one day. Focus contacts also are available in weekly or monthly disposable versions. The lenses are made with a moisturizing...
According to the American Academy of Ophthalmology, 24 million Americans wear contact lenses. While most of this population consists of adults, many older children also wear contact lenses. Contact lenses offer distinctive benefits for children...
Eye contact lenses were first developed in the 1960s, and have continually improved. The early contact lenses were known as hard contact lenses. That is, these lenses were rigid. They were made of a plastic called polymethyl methacrylate (PMMA)....
Contact lenses are used to help correct vision problems. Although they do not fix the problem, they are placed over the eye and assist the wearer in seeing more clearly. These thin lenses lay over the cornea, and correct visibility problems....
An infant is considered premature if it's born before 37 weeks of gestation, regardless of birth weight. Immediately after the baby is born, a thorough physical assessment is performed to determine the newborn's health. Some developmental problems...
Astigmatism is an eye problem that optometrists can correct with the right lenses. Get professional tips and advice on eye problems and optometry in this video.
