What Visual Problems Are Created by an Astigmatism?

Astigmatism is an eye disorder resulting from the cornea having an asymmetrical shape rather than a spherical one. When the cornea, which is the front surface of the eye, is shaped this way---like a football instead of a soccer ball---light entering the eye isn't focused correctly, leading to vision problems.

Identification

• In astigmatism, light rays entering the eye are not bent into a uniform focus on the retina, which causes blurred vision in certain parts of the visual field.

Visual Problems

• The person may have hazy vision and an inability to see fine detail close up or at a distance. When looking at a picture or object, part of it may seem out of focus.

Severity

• Very mild cases of astigmatism are extremely common and do not need correction. Moderate astigmatism, however, can cause headaches and eye strain, while severe astigmatism can cause very blurred vision.

Significance

• A 2008 Ohio State University study found that over 28 percent of children they checked had astigmatism. The condition can be a detriment to school performance and ability to play sports well.

Solution

• Astigmatism can be corrected with prescription eyeglasses, contact lenses and laser surgery.