Symptoms & Signs
- Double vision that comes on quickly
- Drooping of one eyelid
- Pain in head or behind eye
Diagnosis & Tests
An examination of the eyes will determine whether only the third nerve is affected or if other nerves have also been damaged. Signs may include:
- Eyes that are not aligned (dysconjugate gaze)
- Normal or abnormal pupil reaction
In some cases, it may not be clear if the nerve damage is due to diabetes or some other cause, such as an aneurysm. Tests to rule out other causes may include:
- Computed tomography (CT) angiogram
- Lumbar puncture
- Magnetic resonance angiography (MRA)
Review Date : 12/21/2009
Reviewed By : Daniel B. Hoch, PhD, MD, Assistant Professor of Neurology, Harvard Medical School, Department of Neurology, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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