What is Astigmatism?
- Astigmatism is a vision condition that leads to blurred vision at any distance
- In an astigmatic eye, the cornea or the lens have an irregular shape
- This irregular shape prevents light entering the eye to focus properly on the retina. Light focuses on two different areas of the retina
What are the Symptoms of Astigmatism?
- Blurred/Distorted vision
- Headaches and eye strain
How Common is Astigmatism?
- Astigmatism is very common in the United States.
- Most people have some degree of astigmatism
- Usually small amounts do not interfere with normal vision and require no treatment
- Larger amounts can significantly alter vision and lead to other associated problems such as headaches
- Astigmatism commonly occurs with other vision conditions such as myopia or hyperopia
What Causes Astigmatism?
- It is believed that most astigmatism is genetic
- Astigmatism can also result from injuries or surgeries on the eyes and from increase near work
- Often times, doctors will use the analogy of a basketball versus a football to explain astigmatism
- A normal eye has a round shape like a basketball while an astigmatic eye takes on a shape more like a football with different curvatures along the surface of the cornea or lens
When does Astigmatism Occur?
- Astigmatism is usually present at birth
- It can increase or decrease over time or with the onset of certain diseases
How is Astigmatism Diagnosed?
- Diagnosing astigmatism begins with a comprehensive eye exam at Ducklo EyeCare
- During this exam, your doctor uses tests such as visual acuity and machines such as a phoropter and keratometer to determine the degree of astigmatism
- Sometimes, it may be necessary for your doctor to use eye drops to evaluate the health of your eyes more thoroughly
How is Astigmatism Treated?
- Contact Lenses
- Refractive Surgery