Astigmatism

Astigmatism is a common eye condition that affects vision due to an irregular curvature of the cornea or lens. Here are some key points about astigmatism:

1. Cause: Astigmatism occurs when the cornea or lens has a different shape than normal. The exact cause is not fully understood, but it can be inherited or result from eye disease, injury, or surgery. Contrary to popular belief, reading in low light or sitting close to the television does not cause or worsen astigmatism.
   1. Effect on Vision: Normally, the cornea and lens have an evenly rounded shape, allowing light rays to focus sharply onto the retina. With astigmatism, light rays do not refract properly, leading to blurry vision at both near and far distances. People with astigmatism may also have near-sightedness (myopia) or farsightedness (hyperopia) along with it. Symptoms: Common symptoms of astigmatism include:
      • Blurry vision or distorted vision
      • Eyestrain
      • Headaches
      • Squinting
      • Eye discomfort
   2. Diagnosis: An ophthalmologist can diagnose astigmatism through a comprehensive eye exam. Children may not realise they have blurry vision, so early screenings are crucial to prevent complications like amblyopia (lazy eye) and vision loss.
   3. Treatment Options:
      • Corrective Lenses: Eyeglasses or contact lenses can improve vision clarity.
      • Refractive Surgery:
        • LASIK: Reshapes the cornea using laser technology.
        • LASEK: Similar to LASIK but with a different technique.
        • PRK: Removes the epithelium and reshapes the cornea.
        • Epi-LASIK: Uses a mechanized blade to separate the epithelium.
        • Orthokeratology: Rigid contact lenses reshape the cornea while you sleep.

Remember, if you experience any vision changes, consult an eye care professional for proper evaluation and management. Regular eye exams are essential for maintaining good eye health