NURS 363 Lecture Notes - Lecture 5: Child Development Stages, Hyperthyroidism, Cochlea
Document Summary
External anatomy: palpebral fissure, limbus, tarsal plates, meibomian glands, conjunctiva, lacrimal apparatus. 6 cardinal fields of gaze text p. 281. Cranial nerves 3, 4, and 6 control eye movement. C. internal anatomy: outer layer- sclera, middle layer- choroid, pupil, lens, anterior chamber. Inner layer retina, optic disc, macula text p. 283. D. visual pathways and visual fields: refraction of light rays, crossing of fibers at optic nerve. E. visual reflexes: pupillary light reflexes - direct light reflex , accomodation (convergence)- bring object toward the eye and the pupil reacts, consentual reflexes- shine light in one eye and the other pupil constricts. Perrl - pupils equally round and reactive to light and accommodation. Myopia = near sighted (more common in children). Presbyopia = far sighted (more common in older people). Strabismus (one eye moves and the other wont) or diplopia (double vision) Additional history for infants and children: vaginal infection during delivery- herpes, gonorrhea, developmental milestones, routine vision testing, safety measures.
