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Anterior Ischemic Optic Neuropathy (AION)

AION is the most common cause of sudden decreased vision in patients older than 50 years.


Most patients with AION notice a sudden blurriness, dimness or darkness, often above or below where they are looking. Central vision also may be disturbed. Usually there is no discomfort, redness or tearing. Patients with tenderness in their temples or pain when chewing may have a different cause of decreased vision and should bring these symptoms to their doctor’s attention.

Treatment Options

There is no proven treatment for patients with AION; however, many will recover some of their vision which will then remain stable. It is important that their blood pressure be monitored and that they stop smoking.

Want to Know More?

Wheaton Eye Clinic is here to help.
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Wheaton Eye Clinic’s unparalleled commitment to excellence is evident in our continued growth. Today we provide world-class medical and surgical care to patients in six suburban locations—Wheaton, Naperville, Hinsdale, Plainfield, St. Charles, and Bartlett.

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