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Case #152 - March, 2005

A 25-year-old male went to a local hospital complaining of a two-week history of worsening irritation of his left eye. He resides in a semi-rural area, where sheep and horses are raised, and recently returned from Samoa four weeks previous to his hospital visit. While at the hospital, he mentioned that he saw an object crawling on his conjunctiva and removed it. He could not remember any specific event that initiated these symptoms. Upon examination by slit lamp, three larvae were seen and it was noted that they moved away from the light. The larvae (Figures A-C), measuring approximately .75mm in length, were removed and sent to the laboratory for identification. What is your diagnosis? Based on what criteria?

Figure A

Figure A

Figure B

Figure B

Figure C

Figure C

This case was kindly contributed by the Auckland City Hospital, New Zealand and images were taken by Dr. Allen Heath from AgResearch-Wallaceville Animal Research Centre.

Images presented in the monthly case studies are from specimens submitted for diagnosis or archiving. On rare occasions, clinical histories given may be partly fictitious.

DPDx is an educational resource designed for health professionals and laboratory scientists. For an overview including prevention, control, and treatment visit www.cdc.gov/parasites/.

Page last reviewed: August 24, 2016