What is Astigmatism?
Astigmatism is a common vision disorder which results in blurry or distorted vision. It is often related to an abnormal curvature of the cornea, which is the clear front surface of the eye. Astigmatism can also occur due to the irregular shape of the lens inside the eye.
Types of Astigmatism
There are two types of astigmatism:
Regular astigmatism
This occurs when the cornea has an irregular curve in a specific direction. It is the most common type of astigmatism.
Irregular astigmatism
This occurs when the cornea has an irregular curve in multiple directions, which can be caused by an eye injury or certain eye surgeries.
Symptoms of Astigmatism
The most common symptom of astigmatism is blurry or distorted vision, both at distance and near. Other symptoms may include:
– Headaches
– Eye strain
– Squinting
– Difficulty with night vision
– Fatigue when trying to focus
– Double vision
Diagnosis of Astigmatism
Astigmatism can be diagnosed through a comprehensive eye exam. During the exam, your eye doctor will measure the shape and curve of your eye, as well as test your visual acuity.
Treatment of Astigmatism
There are several treatment options for astigmatism based on severity and personal preference.
Corrective Lenses
Eyeglasses or contact lenses are the most common and non-invasive way to correct astigmatism. They work by counteracting the irregular curve of the cornea or lens with additional curve of the corrective lenses.
Orthokeratology (Ortho-K)
Ortho-K is a non-surgical method that uses specially designed contact lenses to temporarily reshape the cornea while you sleep, resulting in clear vision during the day without the need for glasses or contacts.
Laser Surgery
Laser surgery is a permanent solution for those who do not want to use eyeglasses or contact lenses. The surgery works by reshaping the cornea with a laser beam, improving the focus of light onto the retina.
Prevention of Astigmatism
Astigmatism cannot be prevented, but early detection and treatment can prevent further vision problems. It is important to have routine eye exams to ensure that any vision issues are detected early.
Frequently Asked Questions (FAQs)
1. Can astigmatism be cured?
Unfortunately, astigmatism cannot be cured, but it can be corrected through various treatment options.
2. Is astigmatism inherited?
Astigmatism can be hereditary and passed down from parents to their children.
3. Is astigmatism a serious condition?
Astigmatism is not a serious condition on its own, but it can lead to headaches, eye strain, and fatigue if left untreated.
4. Can astigmatism worsen over time?
Astigmatism can worsen over time, especially if left untreated.
5. Is laser surgery safe?
Laser surgery is generally considered safe and effective for correcting astigmatism. However, as with any surgery, there are potential risks and complications.
6. Can astigmatism be corrected with reading glasses?
Reading glasses are designed to correct presbyopia, which is a condition that occurs with age, but not astigmatism.
7. Can astigmatism cause blindness?
Astigmatism alone cannot cause blindness, but it can lead to other vision problems if left untreated.
8. What is the cost of laser surgery for astigmatism?
The cost of laser surgery for astigmatism varies depending on the surgeon and the location, but it typically ranges from $1,500 to $3,000 per eye.
9. Can children have astigmatism?
Yes, children can have astigmatism and it is important to have routine eye exams to detect any vision issues early.
10. Can astigmatism be corrected without surgery or corrective lenses?
Currently, there are no other alternative methods to correct astigmatism without surgery or corrective lenses.
Conclusion
Astigmatism is a common vision disorder that can be corrected through several treatment options. Corrective lenses, orthokeratology, and laser surgery are all effective in treating astigmatism and improving visual acuity. It is important to have routine eye exams to detect any vision issues early and prevent further problems.
