Thelaziasis as an uncommon cause of giant papillary conjunctivitis.

We report a local human case of A 49-year-old lady presented with right eye foreign body sensation for one month. She recalled a fly being stuck onto her right upper eyelashes with mascara when she went hiking in a forest trail in Hong Kong. On assessment there were a lot of giant papillae on palpebral conjunctiva. Three living worms crawling on conjunctiva were discovered and removed in total. The worms were identified as Human thelaziasis is probably under-reported in many countries. The presence of giant papillary conjunctivitis in non-contact lens wearers should alert clinicians to the possibility of thelaziasis in patients with compatible exposure history in endemic regions. Ophthalmologists should increase their awareness towards this uncommon disease and should not wrongly attributed the symptoms to allergic conjunctivitis.