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Related Experiment Videos

High altitude corneal endothelial decompensation.

D D Koch, W J Knauer, J M Emery

    Cornea
    |January 1, 1984
    PubMed
    Summary

    High altitude travel can cause corneal endothelial decompensation in patients with low endothelial cell counts. This hypoxia-induced condition may require corneal transplantation to restore vision.

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    Ophthalmology·2001

    Area of Science:

    • Ophthalmology
    • Altitude Medicine
    • Corneal Science

    Background:

    • Corneal endothelial cells are crucial for maintaining corneal clarity and function.
    • Pre-existing low endothelial cell counts may predispose individuals to endothelial decompensation.
    • High altitude environments present physiological challenges, including reduced oxygen availability (hypoxia).

    Observation:

    • A 77-year-old patient with pre-existing low endothelial cell counts experienced acute unilateral corneal endothelial decompensation after traveling to 12,500 feet.
    • Corneal edema progressively worsened after the patient returned to sea level.
    • The patient required penetrating keratoplasty (corneal transplant) to regain vision.

    Findings:

    • This case represents the first documented instance of hypoxia-induced corneal endothelial decompensation.
    • The findings suggest a direct link between severe hypoxia and acute failure of the corneal endothelium.
    • Endothelial cell density is a critical factor in the cornea's ability to withstand hypoxic stress.

    Implications:

    • Physicians should consider the risk of corneal decompensation in patients with low endothelial cell counts traveling to high altitudes.
    • Further research is warranted to understand the mechanisms of hypoxia-induced endothelial dysfunction.
    • This case highlights the importance of comprehensive pre-travel ophthalmological assessments for at-risk individuals.

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