Eye Assessment

Eye Assessment - EyeAssessment N326 EyeAssessment...

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Eye Assessment N326
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Eye Assessment External Anatomy Eyelids: protect eye Palpebral fissure: open space btw eyelids Limbus: border btw cornea and sclera Canthus: corner of eye, angle where lids meet Caruncle: fleshy mass at inner canthus containing  sebaceous glands Tarsal plates: connective tissue in upper lid
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Eye Assessment External Anatomy Meibomian glands: sebaceous glands in  tarsal plates secrete oily lubricating  material Conjunctiva: transparent protective  covering of eye Palpebral: lines lids, is clear Bulbar: overlays eyeball
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Eye Assessment External Anatomy Cornea: covers/protects iris and pupil Lacrimal apparatus: provides irrigation to  sclera and conjunctiva Lacrimal gland: upper, outer corner of eye,  secretes tears Puncta: where tears drain
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Eye Assessment Internal Anatomy – 3 concentric coats Outer Layer - Fibrous Sclera: protective white covering continuous  with cornea, covers iris and pupil Cornea: sensitive to touch – corneal reflex Middle Layer - Vascular Choroid: delivers blood to retina Iris: controls amount of light into retina
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Eye Assessment Internal Anatomy Pupil: reacts to light/accommodates – CNIII Parasympathetic stimulation- constricts pupil Sympathetic stimulation– dilates pupil Lens: disc, keeps objects in focus on retina Anterior Chamber: posterior to cornea, in front of  iris and lens Posterior Chamber: behind iris, sides of lens Contain aqueous humor, delivers nutrients to tissues and  drains metabolic wastes
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Eye Assessment Inner Layer – Nervous- viewed through  opthalmoscope Retina: light waves turned into nerve impulses  Optic Disc: fibers from retina form optic nerve Retinal Vessels: paired artery and vein Macula: receives/transduces light from center of  visual field Fovea Centralis: area of sharp, keen vision
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Eye Assessment Extraocular Muscles Six muscles attach eyeball to orbit
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Eye Assessment - EyeAssessment N326 EyeAssessment...

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