Astigmatism is a common eye problem that can cause blurry or distorted vision. It occurs when the cornea (the clear front layer of the eye) or lens (an inner part of the eye) has an imperfection in its curvature. This imperfection causes light to focus unevenly on the retina, resulting in blurred vision at all distances.

Some key points about astigmatism include:

• Symptoms: Blurred or distorted vision, eye strain, headaches, and difficulty seeing at night are common symptoms of astigmatism.

• Causes: Astigmatism can be present at birth or develop after an eye injury or surgery. It can also be associated with other eye conditions such as nearsightedness or farsightedness.

• Diagnosis: An eye doctor can diagnose astigmatism through a comprehensive eye exam that includes a visual acuity test, a refraction test, and a keratometry test.

• Treatment: Treatment for astigmatism may include corrective lenses such as glasses or contact lenses, refractive surgery, or orthokeratology (a type of contact lens therapy).

If you experience any symptoms of astigmatism, it is important to see an eye doctor for a comprehensive eye exam to determine the cause and appropriate treatment.