Astigmatism is a vision condition that causes blurred vision. It occurs when the cornea is curved in an irregular way, preventing light rays from being focused properly on the retina. This results in blurred vision at varying distances, leading to discomfort and headaches.
There are two types of astigmatism: regular and irregular. Read on as the eye doctors from Innovative Eyecare explain the difference.
Regular vs. Irregular Astigmatism
Regular astigmatism occurs when the surface of the eye is not entirely round. Here, the curvature is pronounced in one direction or meridian more than the other. To illustrate this, imagine the front of the eye as the clock’s face. A line connecting 12 to 6 is considered as one meridian. Perpendicular to it is the line connecting 3 and 9.
Irregular astigmatism occurs when the curvature of the eye is pronounced in any direction, not just the center. The curve could be steeper towards the bottom than on top, or it could be any configuration in which the eye’s surface area is uneven.
An eye doctor detects astigmatism through corneal topography and other advanced front eye scans. These tests are conducted to measure the extent of the curvature of the eye’s surface. They are also helpful in detecting eye disorders that affect the cornea, such as keratoconus. This ailment causes the cornea to progressively thin, resulting in the cornea bulging into the shape of a cone.
Astigmatism can be corrected with eyeglasses or contact lenses to alter the way light enters the eyes. Rigid contact lenses can help even out any irregularities on the surface of the eye. In advanced cases, LASIK may be necessary.
Our eye care specialists can perform comprehensive eye exams and recommend eyeglasses and other corrective devices to improve your vision. For questions regarding astigmatism, you can call Innovative Eyecare at (256) 270-0899 to set an appointment. We serve residents of Decatur, AL.