How Common Is Anisocoria?

Anisocoria, a condition where one pupil is larger than the other, may seem like a minor issue, but it can be a sign of a more serious underlying health problem. Experts estimate that around 15% of people experience anisocoria at some point in their lives.

Regardless of what's causing your pupils to be irregularly sized, it's essential to see an eye care specialist as soon as possible. This distinction isn't as important as getting your symptoms evaluated right away. An eye care specialist will help determine if the condition is physiological or pathological.

Types of Anisocoria

Eye care specialists classify anisocoria into two categories: physiological and pathological. Physiological anisocoria is caused by something malfunctioning inside the body, while pathological anisocoria is a result of a health condition.

Symptoms of Anisocoria

If you notice that one pupil is suddenly larger than the other, it's essential to seek medical attention immediately. This could be a sign of a life-threatening medical emergency. You may also experience symptoms such as pain or noticeably worse vision, which require immediate attention.

Visiting an eye care specialist or going to the emergency room can help determine if you have anisocoria and what treatment options are available. If one pupil can't adjust to light like it should, you might have trouble seeing clearly or be sensitive to light in your affected eye.

Causes of Anisocoria

The pupil is the black center of the eye that changes size to help us see in different amounts of light. It shrinks (contracts) in bright light and expands (dilates) in dim light. Anisocoria occurs when one pupil becomes stuck noticeably larger than the other.

One fixed dilated pupil can cause trouble seeing clearly or being sensitive to light in your affected eye. You may notice the size difference by looking at yourself in a mirror or taking a selfie. In some cases, anisocoria has no long-term complications, but it can also be a sign of a serious medical condition.

Anisocoria is a common condition that requires immediate attention from an eye care specialist. It's essential to seek medical help if you notice one pupil is larger than the other or if you experience symptoms such as pain or noticeably worse vision. By getting your symptoms evaluated right away, you can receive proper treatment and prevent any potential complications.