Many people have not even heard of astigmatism or likely have no idea what this condition involves. Some may have heard the term at their optometrist's office and have linked it to some sort of eye condition. Astigmatism is actually the most common visual problem, and many patients are unaware they even have this disorder. Part of the eye, usually the cornea (corneal astigmatism) but sometimes the lens (lenticular astigmatism), is misshapen leading to visual problems. Depending on the severity of the condition, patients may experience blurred vision, headaches, eye strain or distorted visual images. Blurring occurs at all distances and does not get better or worse on its own. Because the condition can present in combination with nearsightedness or farsightedness and can be mild, it is often underdiagnosed.
Studies suggest that as much as 28% of children may have astigmatism that causes symptoms. Some authorities suggest this number is much higher and may affect most people to some degree. Kids are even less likely to complain of visual problems and more likely to go undiagnosed. Astigmatism is caused by genetics (many babies are born with it), eye injuries resulting in scarring to the cornea, eye surgery or keratoconus (another eye condition). Contrary to some popular beliefs, astigmatism is not caused by sitting too close to the TV or reading in poor light.
Treatment success for astigmatism varies depending on whether the condition is regular or irregular. In most cases corrective lenses can take care of the problem. However, if astigmatism is severe, refractive surgery is recommended. In general, eyes should be examined about every two to four years until age 65 for individuals who are healthy. After age 65, health officials recommend having them checked every one to two years for signs of eye disease or problems. If you have any visual problems or symptoms, consult a physician immediately.
Posted by Dr. Jennifer Stagg on September 17, 2006 07:31 AM
