This document provides common medical abbreviations used in otolaryngology and optometry. Some abbreviations included are PE Tube for Pressure Equalizing Tube, EENT for Eye, Ear, Nose, and Throat, BC for Bone Conduction, and AU for Both Ears. Additional abbreviations are OM for Otitis Media, EM for Emmetropia, XT-exotropia->OS-left eye, EOM for Extraocular Movement, and VA for Visual Acuity.