NSE 13A/B Lecture Notes - Lecture 9: Pupillary Light Reflex, Palpebral Fissure, Sensorineural Hearing Loss
30 Nov 2017
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Eyes: test central visual acuity (refer to cnii-optic, test diagnostic visions test (refer to cniii-oculomotor, cniv-trochlear and cnvi- abducens) Identify critical findings related to sudden change vision. Ears: inspect and palpate external ear, describe the technique and rationale for otoscopic examinations. Practice otoscopic examination on models -describe the external canal and the tympanic membrane: test hearing acuity with whispered voice test (tests cnviii [acoustic]) Eyelids: two movable shades that further protect the eye from injury, strong light, and dust. Palpebral fissure: elliptical open space between the eyelids. Limbus: the border between the cornea and sclera. Canthus: corner of the eye, the angle where eyelids meet. Tarsal plates: strips of connective tissue that give it shape; contain meibomian glands. Meibomian glands: modified sebaceous glands that secrete oily lubricating material onto eyelids; stops tears from overflowing; forms airtight seal when eyelids are closed. Conjunctiva: thin mucous membrane folded like an envelope between the eyelids and the eyeball.
