• Sung Ho Jang and Jeong Pyo Seo.
• Department of Physical Medicine and Rehabilitation, College of Medicine, Yeungnam University, Taegu, Republic of Korea.
• Medicine (Baltimore). 2017 Jul 1; 96 (29): e7356.

RationaleLittle is known about optic radiation (OR) injury following aneurysmal subarachnoid hemorrhage (SAH). In the current study, we report on a patient who showed a visual field defect and injury of the OR following aneurysmal SAH, using diffusion tensor tractography (DTT).Patient ConcernsAt 4 weeks from onset, when a 62-year old female started rehabilitation, she complained of a visual field defect. Peripheral field defects were detected on both eyes using the Humphrey visual field test.DiagnosesThe patient underwent aneurysm clipping for a ruptured aneurysm in the left posterior communicating artery and extraventricular drainage (the left prefrontal approach) for subarachnoid hemorrhage. She also underwent conservative management for intracerebral hemorrhage in the left internal capsule detected at 2 days after onset.InterventionsDTT data were acquired at 4 weeks after onset OUTCOMES:: Regarding DTT parameters, fiber numbers of both ORs of the patient were decreased over 2 standard deviations of that of 7 age- and sex-matched normal subjects normal control subjects. However, the value of fractional anisotropy was similar to that of normal control subjects. On the configuration of the OR of the patient, both ORs were thinner than those of normal control subjects.LessonsInjury of the OR was demonstrated in a patient with a visual field defect following aneurysmal SAH, using DTT.

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