蟠尾絲蟲症 [ㄆㄢˊ ㄨㄟˇ ㄙ ㄔㄨㄥˊ ㄓㄥˋ; pan2 wei3 si1 chong2 zheng4] "river blindness" or onchocerciasis, the second most common cause of blindness in humans, caused by the filarial parasite worm Onchocerca volvulus ◄ ►