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Related Experiment Videos

Keratomalacia.

R S Smith, T Farrell, T Bailey

    Survey of Ophthalmology
    |November 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Severe vitamin A deficiency can cause irreversible blindness. A young woman developed nyctalopia, xerophthalmia, and keratomalacia due to a restrictive diet, leading to corneal perforation and death.

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    Area of Science:

    • Ophthalmology
    • Nutritional Science
    • Public Health

    Background:

    • Xerophthalmia and keratomalacia are significant public health issues, often linked to combined vitamin and protein deficiencies.
    • Nutritional deficiencies can lead to severe ocular manifestations impacting vision and eye health.

    Observation:

    • A case study of a 27-year-old individual who followed a restrictive diet deficient in protein and vitamins for an extended period.
    • The individual presented with nyctalopia (night blindness), xerophthalmia (dry eyes), and keratomalacia (corneal softening) complicated by bilateral corneal perforation.

    Findings:

    • Despite medical intervention, the patient remained comatose and unfortunately passed away shortly after admission.
    • Ocular pathology revealed bilateral corneal melting, prolapse of intraocular contents, conjunctival epidermidalization, goblet cell atrophy, and thinning of the retinal outer nuclear layer.

    Related Experiment Videos

  • Experimental studies on pure vitamin A deficiency (avitaminosis A) show epithelial atrophy and keratinization, consistent with observed changes.

    • Implications:

    • This case highlights the critical role of adequate nutrition, particularly vitamin A, in preventing severe ocular diseases and systemic complications.
    • Emphasizes the need for public health awareness regarding the dangers of extreme dietary restrictions and potential nutritional deficiencies.
    • Underscores the rapid progression and potentially fatal outcomes of severe vitamin A deficiency, even in young individuals.