ST. JOHNSBURY OFFICE

(802) 748-8126 - fax:(802) 748-2208

LITTLETON OFFICE

(603) 444-2484 - fax:(603) 444-1672

Print

Astigmatism



WHAT IS ASTIGMATISM?

Astigmatism is the most common vision disorder and is due to an irregular shaped cornea or lens.  To individuals with uncorrected astigmatism, images may look blurry or shadowed.

Astigmatism

WHAT ARE THE SYMPTOMS OF ASTIGMATISM?

If only a small amount of astigmatisms is present, it may cause no symptoms.  In larger amounts, it may cause any of the following:

•    Blurred or distorted vision
•    Headaches
•    Eyestrain
•    A tendency to squint to make things appear clearer

WHAT CAUSES ASTIGMATISM?

Astigmatism occurs when the cornea is irregular in shape instead of being shaped like a sphere.  The lens of the eye can also cause astigmatism if its shape is not completely convex.  In either case, light rays focus on two different points in the back the eye rather than just one.  Astigmatism often runs in families, but can develop on its own later in life.

HOW CAN ASTIGMATISM BE TREATED?

Astigmatism can be corrected with:
•    Glasses
•    Contact lenses
•    Corneal relaxing incisions
•    Laser vision correction
•    Special implant lenses.

Many people with astigmatism believe they cannot wear contact lenses.  There are now both soft (called toric) and rigid contacts that can correct for astigmatism.  If you have astigmatism, ask your doctor which lens is right for you.