What is astigmatism?

Astigmatism is a very common disorder occurring when the shape of the cornea is not spherical or regular. Without this condition, the cornea is round and almost uniform along all axes. If the corneal curvature is irregular, the light entering the eye is not correctly received by the retina, causing blurred and distorted vision, regardless of the distance at which the objects are located.

Astigmatism creates imprecise vision at near and far distances. Vision lacks precision and it is difficult to distinguish clearly between certain shapes and details, such as the contrasts between horizontal, oblique lines or rounded elements (letters a, o, u, d, b).

Astigmatism can be an isolated pathology, but it is usually accompanied by myopia or hyperopia.

How is astigmatism treated?

Astigmatism can be corrected by wearing glasses or contact lenses. However, in adulthood, when the condition has stabilized and no longer evolves, your ophthalmologist may suggest a laser procedure or phakic lenses.

When the astigmatism is combined with a cataract or presbyopia, it can be corrected with trifocal technology. Find out more