The term, pseudomyopia, derives from the two words, "pseudo" meaning unreal or fake; and "myopia," the medical term for nearsightedness. The term refers to sudden-onset nearsightedness. According to the University of Michigan Health System,...
Photorefractive keratectomy, or PRK, is the use of a special type of ultraviolet energy to smooth and shape the cornea. By properly shaping the cornea, PRK allows for the correction of vision and can drastically improve a patient's quality of...
The term "astigmatism" refers to an abnormal shape of the cornea of the eye. Normally, the cornea is smooth and round, thus enabling it to bend incoming light in a fashion that focuses it on a very exact point at the back of the inner eye, or...
Many millions of people have one type or another of difficulty with their vision. For much of history, the only treatment option for vision problems was the use of eyeglasses, but in recent years a variety of different surgical procedures have...
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...
PRK, or photorefractive keratectomy, was invented in the early 1980s and was the first kind of corrective eye surgery to use a laser rather than a blade to remove corneal tissue. PRK uses an excimer laser that sends out a cool beam of ultraviolet...
