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Visual System (Glaucoma (Primary open angle (Chronic, gradual loss,…
Visual System
Glaucoma
Acute angle closure
Iris bows, closing anterior chamber
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Primary open angle
Chronic, gradual loss, unnoticed
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RF: IO pressure, ^BP, steroids chronic.
Dx: Tonometry, Fundoscopy, visual perimetry
Tx
Aq humour outflow: B-bloker, a2 agonist, CA inhibitor
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Cataracts
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FR: Ageing, trauma, increased IO pressure, DM, genes.
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Eye movement: To move/maintain visual target on the central part of retina. Fovea= Highest resolution.
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Control of pupil
Parasympathetic
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Accommodation reflex: Pupil contrict, lens accomm, convergence
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