Results from a 30-year-old woman with acute mountain sickness (Lake Louise Questionnaire Score = 4) after exposure to a simulated high altitude using a hypobaric hypoxic chamber. (IMAGE)
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Data from the top and bottom rows are obtained before and after exposure to a simulated high altitude, respectively. (A/B) Ultrasonography image showing the optic nerve subarachnoid space area expansion (white shaded area) after exposure to a simulated high altitude (a) 6.855 vs. (b) 7.545 mm2. (C/D) Fundus photograph showing the lack of disc edema during exposure to a simulated high altitude. (E/F) However, RNFL thickness increased after exposure (blue arrows). (G/H) Increased radial peripapillary capillary flow density is seen by optic coherence tomography angiography after exposure.
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