Astigmatism is an optical defect in which the eye is unable to focus light properly on the retina, resulting in blurred vision at all distances. The severity of astigmatism is measured using a unit of measurement called diopters. The higher the diopter number, the higher the level of astigmatism. The highest astigmatism level is 6 diopters, which is considered severe.
At 6 diopters, people with astigmatism may experience significant blurriness or distortion in their vision at all distances. This can cause difficulty seeing objects in the distance or up close, as well as distorted vision of faces and objects. Blurriness can also be present in all directions. Other symptoms of severe astigmatism can include eye strain, headaches, squinting, and fatigue.
Fortunately, astigmatism can be treated with glasses, contacts, or surgery. If the astigmatism is mild to moderate, glasses and contacts are usually the best option. These can correct the curvature of the eye and allow light to properly focus on the retina. For severe astigmatism, laser refractive surgery may be recommended. In this procedure, the shape of the cornea is altered to correct the curvature of the eye.
No matter the severity of astigmatism, seeking proper treatment is essential for maintaining good vision. Talk to an eye doctor to find out if you have astigmatism and to discuss your treatment options.