Abstract
To evaluate the presence of central nervous system degeneration in patients with low-tension glaucoma using magnetic resonance imaging. Ten patients with low-tension glaucoma and ten age-matched control subjects underwent magnetic resonance imaging. Cortical atrophy and cerebral infarcts were graded from "0" (normal) to "3," which was done subjectively by two neuroradiologists independently in a masked fashion. Midsagittal corpus callosum section was evaluated by measuring the thickness and cross-sectional area. There was a significantly greater extent of cerebral infarcts in the patients with low-tension glaucoma (P = 0.02). The thickness of the body (P = 0.03) and genu (P = 0.04) of the corpus callosum were thinner in the patients with low-tension glaucoma. The corpus callosum cross-sectional area was smaller in the low-tension glaucoma group (P = 0.04). There were no significant differences in the other parameters in this study. This study suggests a greater extent of cerebral infarcts and corpus callosum atrophy in patients with low-tension glaucoma. This may imply a greater degree of neuronal degeneration, possibly on an ischemic basis in low-tension glaucoma.
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