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Worms mate in man's eyes, get plucked out right before larvae burst out

Worms mate in man's eyes, get plucked out right before larvae burst out

Summary

Doctors in South Korea removed 11 living Thelazia callipaeda roundworms from a 71-year-old farmer’s eyes after he reported two months of redness, blurred vision, and a persistent foreign-body sensation. Some female worms carried developing eggs and larvae; after removal, his symptoms resolved without antiparasitic medication.

Key Facts

  • The farmer had symptoms in both eyes for about two months before seeking care.
  • Doctors used numbing eye drops and fine forceps to remove 11 adult worms, each 11 to 22 millimeters long.
  • Microscopic examination identified the worms as Thelazia callipaeda, a parasite found mainly in the eyes of cats and dogs.
  • The parasite spreads through flies that feed on eye secretions and carry larvae to another host’s eye.
  • Some female worms contained developing eggs and first-stage larvae, which began emerging after removal.
  • The farmer’s corneal cells had eroded, and blood vessels in the conjunctiva were enlarged.
  • At a follow-up visit two months later, his symptoms had resolved and doctors found no more worms.
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