This document discusses the anatomy and physiology of the eye and ear. It introduces important terminology used when referring to these special senses, including terms related to eye structures, ear structures, vision testing, common eye conditions, and eye exams. Key terms defined include HEENT, EENT, ENT, PERRLA, ARMD, SMD, and others related to visual acuity, fields of vision, conditions like astigmatism, and ophthalmology exams and procedures.