17 - CNS 4 Cerebellum & Vision - Transcribed

Optometrist bscod diagnosis refractive errors

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Unformatted text preview: almologist (BSc, MD, Residency) Diagnosis diseases of eye & orbit, prescribes systemic drugs, eye & orbit surgery. 1) Refractive Media Cornea light Aqueous Humor lens 3 Coats of the Eye: Sclera/Cornea Choroid/Ciliary Body/Iris Retina Vitreous Humor Retinal fovea Two Elements in Vision Vision 2) Neural Detection and Transmission to brain to Optic nerve Sensory Aspects of Vision •Sclera •Cornea •Retina & Visual Pathway •Glaucoma Normal vision depends on the shape of the cornea and sclera Refractive Power: Air/Water interface (80%) Accomodation: lens lens (20%) (20%) 60% of population + diopters 20-30% of population - diopters Cornea Cornea cornea sclera iris Ciliary Muscle Lens Cornea Tears H2O Epithelium Stroma Na+ ClDehydration & regular arrays = crystal Endothelium Aqueous humor Conjunctiva Conjunctival blood vessels inflammation= conjunctivitis Skin Conjunctiva ra le sc Corneal Corneal epithelium epithelium scl era Orbital fat Mucous membrane Lines interior of Eyelid and surface of sclera Lacrimal Apparatus Lacrimal Lacrimal gland orbit Lacrimal caruncle Flow of Tears Lacrimal Duct Antimicrobial: IgA, NaCl nose Eyelid Glands Eyelid Eyelid Tarsal Glands Tarsal plate Sebaceous Glands of Eyelash Oily secretions prevent evaporation of tears Tarsal Glands Glands light Neural retina Ganglion cell axons Rods and cones Pigment epithelium Optic nerve Ophtalmoscope Ophtalmoscope used to view fundus Fundus View with Ophthalmoscope Optic nerve No bulgi...
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