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ARTICLE |

A MIRROR FOR PATIENTS WITH HEMIANOPSIA

ERIC BELL, M.D.
JAMA. 1949;140(12):1024. doi:10.1001/jama.1949.82900470010007a.
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Hemianopsia is relatively frequent among patients with intracranial lesions. Most of these defects are of the nature of a homonomous hemianopsia. Patients with this disability often complain of the repeated dangers and embarrassments which occur as the direct result of their restricted field of vision. They fail to see swiftly moving automobiles, they are afraid to gaze into shop windows because of the probability of colliding with other pedestrians and they fail to see the food passed to them at the dinner table. The complaint is usually worded thus: "If I only knew that something were approaching me on my blind side, I could turn my head and look over there—but I don't know when to look."

In an effort to find some gadget which would aid these patients in "knowing when to look," a simple device, consisting only of a small, oval mirror measuring about 1 by 2 cm.,

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