Zarei-Ghanavati S, et al. - In this double-masked randomized clinical trial, researchers sought to compare the impacts of Tea Tree Oil shampoo (TTO) with regular-lid shampoo on the treatment of meibomian gland dysfunction (MGD) signs and symptoms. For 40 patients with MGD, daily lid scrubbing with TTO shampoo in one eye and regular-lid shampoo in the other was used. TTO shampoo was found to be more effective than regular-lid shampoo in controlling MGD signs and symptoms, despite causing more ocular surface irritation during application.