[Randomized controlled clinical trials for treatment of external sty with ear-apex blood-letting].

Objective: To observe the clinical therapeutic effect of ear-apex blood-letting for external sty.

Methods: A total 102 sty patients were randomized into ear-apex blood-letting group (n = 51) and routine treatment (medication) group (n = 51) according to computer-aided randomization procedure. Ear-apex-bloodletting (5-6 blood drops/time) was performed once daily for 3 times for the patients of blood-letting group.