retinal anatomy lecture 11
TRANSCRIPT
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Retina Anatomy(Introduction)
Dr Mahtab Alam KhanzadaFCPS (ophthalmology)
FICO (vitreo-retinal surgery)
Assistant Professor Liaquat University of Medical & Health
Sciences Jamshoro
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The retina is a thin, semitransparent, multilayered sheet of neural tissue that lines the inner aspect of the posterior two-thirds of the wall of the globe.
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It extends almost as far anteriorly as the ciliary body, ending at that point in a ragged edge, the ora serrata .
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The outer surface of the sensory retina is apposed to the retinal pigment epithelium and thus related to Bruch's membrane, the choroid, and the sclera.
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The inner surface of the sensory retina is apposed to the vitreous humor.
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Blood supply : Choriocapillaris---outer third of the retina Branches of the CRA---inner two-thirds . The fovea is supplied entirely by the Choriocapillaris
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• Layers of the Retina
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Schematic drawing of the functional parts of the rods and cones
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