{"id":1922,"date":"2026-10-20T08:53:41","date_gmt":"2026-10-20T08:53:41","guid":{"rendered":"https:\/\/laseristanbulclinic.com\/eye-health\/conditions\/astigmatism-explained\/"},"modified":"2026-10-20T12:58:33","modified_gmt":"2026-10-20T12:58:33","slug":"astigmatism-explained","status":"publish","type":"page","link":"https:\/\/laseristanbulclinic.com\/en\/eye-health\/conditions\/astigmatism-explained\/","title":{"rendered":"Astigmatism Symptoms and Causes: Astigmatism Explained"},"content":{"rendered":"\n
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  1. Home<\/a><\/li>
  2. Knowledge centre<\/a><\/li>
  3. Eye conditions & symptoms A\u2013Z<\/a><\/li>
  4. Astigmatism Symptoms and Causes: Astigmatism Explained<\/span><\/li><\/ol><\/div>\t\t\t

    Astigmatism Symptoms and Causes: Astigmatism Explained<\/h1>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t
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    \"Close-up<\/figure>\n\t\t\t\t\t\t\t\t\t

    Astigmatism symptoms are blurred or distorted vision, squinting, eye strain, headaches and trouble seeing at night. Astigmatism means the front of the eye is shaped more like a rugby ball than a football, so light focuses at more than one point. It is very common, often mild and easy to correct. Prof. Dr. Ahmet Sat\u0131c\u0131 and Op. Dr. Aysan Bayram treat it with laser or toric lenses.<\/p><\/div>\n\t\t\t\t\t<\/div>\n\t<\/div><\/div>\n<\/section>\n\n\n\n\n

    What does astigmatism mean?<\/h2><\/div>

    Astigmatism means that your eye focuses light at more than one point instead of one. The NHS describes it as an eye shaped more like a rugby ball than a football. The American Academy of Ophthalmology (AAO) defines it as an imperfection in the normal curvature of the cornea or the lens. The cornea is the clear window at the front of the eye. When it has one steeper curve and one flatter curve, light from a single object is spread over two focus points, and the picture on the retina is smeared rather than sharp.<\/p>\n

    Astigmatism is a refractive error, in the same family as short-sightedness (myopia) and long-sightedness (hyperopia), not an eye disease. The NHS says it normally happens alongside short-sightedness or long-sightedness, which is why one prescription often lists all three.<\/p>\n

    How common is it?<\/strong> Very. A 2018 systematic review in the Journal of Current Ophthalmology<\/em> found astigmatism in about 40.4% of adults and 14.9% of children worldwide, making it the most common refractive error in both groups. If you have it, you are in good company.<\/p>\n

    Regular and irregular astigmatism.<\/strong> Most astigmatism is “regular”: the two main curves sit at right angles to each other, like the two curves of a rugby ball, and glasses can correct it. “Irregular” astigmatism means the surface is uneven, for example because of keratoconus, scarring or earlier surgery. It is less common, is not fully corrected by ordinary glasses and needs a specialist assessment.<\/p><\/div><\/div><\/div><\/div><\/div><\/section>\n\n\n\n\n

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    What are the symptoms of astigmatism?<\/h2>\n\t\t\t

    The main symptom of astigmatism is blurred or distorted vision, at near, far or both. The US National Eye Institute (NEI) lists the typical symptoms as:<\/p>\n\t\t\t