Astigmatism - Cause For Blurred Vision
Below is a MRR and PLR article in category Health Fitness -> subcategory Medicine.
Understanding Astigmatism: A Common Cause of Blurred Vision
Overview
Astigmatism is a frequently overlooked reason for blurred vision and is one of the most common eyesight problems. This condition often accompanies nearsightedness or farsightedness, affecting overall vision quality.
Causes
Astigmatism primarily results from an irregular shape of the cornea or lens, known as lenticular astigmatism. The irregular curvature causes light to focus on multiple points rather than a single focus, leading to blurred vision. Corrective measures include eyeglasses, contact lenses, or refractive surgery.
Explanation
In simpler terms, astigmatism occurs when the cornea is oval instead of round. This variation creates two curves?"a steeper and a flatter one?"that spread light to two focal points, distorting vision.
Hereditary and Other Causes
Astigmatism often runs in families, as many people are born with an oblong cornea. It can also occur due to corneal scarring from specific eye surgeries or keratoconus, a condition causing corneal thinning.
Impact on Vision
When the cornea curves excessively, it can result in nearsightedness (myopia), where light focuses before the retina, making distant objects blurry. Conversely, insufficient curvature can lead to farsightedness (hyperopia), focusing light behind the retina and blurring nearby objects.
Symptoms and Diagnosis
Signs of astigmatism include distorted visual fields, with horizontal, vertical, or diagonal lines appearing blurred. If symptoms worsen, consulting an eye doctor is crucial. Frequent headaches, rubbing, or squinting can also indicate astigmatism.
Treatment Options
Astigmatism can be addressed through surgery, such as astigmatic keratotomy and LASIK, which reshape the cornea, allowing light to focus correctly. Early intervention, especially in children, is essential to prevent permanent vision loss. Additionally, practicing eye exercises such as yoga may help alleviate mild symptoms.
Conclusion
Consulting with an eye care professional is vital if you experience persistent blurred vision or discomfort. Early diagnosis and treatment can significantly improve visual quality and prevent further complications.
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