In an eye with a refractive error, the mismatched curves in the eye prevent the light rays from bending properly. The result is a blurry image. There are two different types of astigmatism: corneal astigmatism, where the mismatched curves occur in the cornea, and lenticular astigmatism where the curves in the lens are mismatched. Both cause blurry vision but can occur more horizontally, vertically or diagonally.
While these are some of the main symptoms of an astigmatism, some people don’t have any symptoms at all.
A refraction test uses a machine called an optical refractor. The machine has multiple corrective glass lenses of different strengths. Your doctor will ask you to read a chart while looking through lenses that are different strengths on the optical refractor. They’ll eventually find a lens that appropriately corrects your vision. Most cases of astigmatisms can be corrected with glasses or contacts.
At SEEN Vision Care we have the latest technology in the optical space and qualified optometrists at our Windsor, Tecumseh, and Dearborn clinics to accurately identify and treat your astigmatism.