Understanding Astigmatism: Causes, Symptoms, and Treatment Options
Being diagnosed with astigmatism can bring up many concerns—What is it? Will my vision worsen over time? Is there a treatment? Fortunately, astigmatism is a common and treatable condition that affects the curvature of your cornea, making it difficult for light to focus properly on the retina.
At Optometrists’ Clinic Edmonton, we help patients understand their diagnosis, explore treatment options, and find the right vision correction solutions. If you suspect you have astigmatism, a comprehensive eye exam in Edmonton is the first step to improving your vision.
What Is Astigmatism?
Astigmatism occurs when the cornea (the clear, dome-shaped surface of the eye) is irregularly shaped. Normally, the cornea is symmetrically curved like a basketball. In individuals with astigmatism, the cornea has an oval or football-like shape, causing blurry or distorted vision. This uneven curvature prevents light from focusing properly, leading to vision problems at different distances.
Types of Astigmatism
Astigmatism can vary in severity and type. Optometrists classify astigmatism into three main categories:
- Myopic Astigmatism – One or both eyes are nearsighted, meaning distant objects appear blurry.
- Hyperopic Astigmatism – One or both eyes are farsighted, making close-up objects difficult to see clearly.
- Mixed Astigmatism – One meridian of the eye is nearsighted, while the other is farsighted, causing a combination of vision issues.
If left uncorrected, astigmatism can lead to eye strain, headaches, and difficulty reading or focusing for long periods.
What Causes Astigmatism?
Astigmatism is typically caused by an irregularly shaped cornea and can develop at any age. Many people are born with the condition, and it can worsen over time if not properly managed.
Certain risk factors may increase the likelihood of developing astigmatism, including:
- Genetics – A family history of astigmatism, nearsightedness, or farsightedness increases your chances of developing the condition.
- Ethnicity – Studies suggest Asian and Hispanic individuals may have a higher risk of astigmatism.
- Eye Trauma or Surgery – Any injury to the eye or previous surgery can alter the cornea’s shape, leading to astigmatism.
- Keratoconus – A progressive eye condition that causes the cornea to thin and bulge into a cone shape, resulting in severe astigmatism.
Since astigmatism often develops in childhood, it’s essential to have regular pediatric eye exams to ensure early detection and treatment.
How Is Astigmatism Treated?
The good news is astigmatism is easily treatable with several corrective options, including:
1. Eyeglasses
Glasses are the most common and simple solution for correcting astigmatism. Special cylindrical lenses help compensate for the uneven curvature of the cornea, providing clear, sharp vision.
2. Contact Lenses
Contact lenses are another great option, especially for those who prefer a glasses-free lifestyle. Advances in technology have led to the development of toric contact lenses, specifically designed to correct astigmatism. These lenses are shaped to align with the irregular cornea, providing stable and clear vision.
3. Refractive Surgery (LASIK or PRK)
For individuals seeking a more permanent solution, laser eye surgery may be an option. Procedures like LASIK and PRK reshape the cornea, correcting its curvature and eliminating the need for glasses or contacts. However, not everyone is a candidate for surgery—your optometrist can determine if this option is right for you.
Schedule an Eye Exam in Edmonton
If you’re experiencing symptoms of blurred vision, frequent headaches, or eye strain, it may be time for an eye exam in Edmonton. At Optometrists’ Clinic Edmonton, we provide comprehensive eye care and personalized treatment plans to help manage astigmatism effectively.
Don’t let vision problems affect your daily life—schedule an appointment today and find the best solution for clear, comfortable vision!
