Vision problems affect many people and become more common as we age. One cause of distorted vision is a condition called astigmatism. Here’s what you need to know about it.
What is Astigmatism?
Astigmatism is a refractive error that causes vision to be blurry, fuzzy, or distorted. It is caused by flaws – sometimes present from birth – that affect the way your eye bends light. When light enters your eye, it is passed to the retina, a light-sensitive area at the back of your eyeball.
When there is a curvature in the cornea, the lens, or both, images may not be properly focused on the retina. The result is that the brain perceives the images as unclear.
Astigmatism may exist alone or in combination with myopia (nearsightedness) and hyperopia (farsightedness.)
The symptoms of astigmatism include blurred or distorted vision at all distances, squinting, double vision, poor night vision, headaches, and eyestrain. If you have these symptoms, it’s possible you could have astigmatism in one or both eyes.