临床与实验眼科学杂志
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High Altitude Retinal Hemorrhage

Maria Agustina Borrone and Rodrigo Martin Torres

Objective: sudden atmospheric pressure changes can generate vascular modifications in the retina. We present a clinical case of retinal hemorrhage related to high altitude and propose to revise its pathophysiology.

Methods: A case presentation with review of literature.

Results: 36 year old Male patient came to our institute with sudden diminished vision in the right eye associated with loss of consciousness while climbing a mountain. In the ophthalmological examination, we could appreciate in the right eye a macular hemorrhage and in both eyes few diffuse hemorrhages in mild periphery. The patient lost follow-up and return after 1 year for a check-up. He had spontaneous resolution of all hemorrhages.

Conclusion: the acute mountain sickness affects mostly not climatized people. Changes in atmospheric pressure generate reduction of the partial pressure of oxygen in the blood. This can lead to vascular changes in the retina. This change may not appear if there is a proper climatization while climbing a mountain. The presence of high altitude retinopathy alerts about cerebral oedema related to high altitude.