Astigmatism surgery
Astigmatism is caused by an irregularly curved cornea, where one meridian is longer than the other. As a result, light entering the eye is not evenly focused on the retina, leading to blurred vision. This refractive defect occurs when light rays entering the eye are not refracted equally in all meridians, affecting vision at both near and far distances.
Astigmatism is often associated with myopia or hyperopia. The irregular shape of the cornea is the most common cause, although it can also be caused by the irregular geometry of the lens.
CAUSES
- The irregular shape of the cornea.
- It is a hereditary condition.
- Eye trauma.
- A consequence of an underlying disease.
- Eye injuries.
SYMPTOMS
- Unequal sharpness in horizontal, vertical, or oblique lines.
- Perception of distorted images.
- Headaches.
- Blurred vision.
DIAGNOSIS
The diagnosis of astigmatism is made through a comprehensive visual examination that includes a series of tests to assess the condition of the eyes. These tests may involve shining bright lights into the eyes and using various lenses to determine the extent and nature of astigmatism.
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