Anatomy of cornea copy
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ANATOMY OF CORNEASudarsan
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HUMAN EYE
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INTRODUCTION•TRANSPARENT•AVASCULAR•WATCH GLASS LIKE STRUCTURE•FORMS ANTERIOR 1/6 TH OF OUTER FIBROUS COAT•REFRACTIVE POWER
+43 TO +44 dioptres
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EmbryologySURFACE
ECTODERMMESENCHYME
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EMBRYOLOGY.. CORNEAL EPITHELIUM- SURFACE
ECTODERM OTHER LAYERS- FIBROUS LAYER OF
MESENCHYME LYING ANTERIOR TO THE OPTIC DISC
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DIMENSIONS
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HISTOLOGY
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HISTOLOGY.. EPITHELIUM BOWMAN’S MEMBRANE SUBSTANTIA PROPRIA DUA’S LAYER DESCEMET’S MEMBRANE ENDOTHELIUM CORNEAL ABRATION CORNEAL SCARRING
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BLOOD SUPPLY AVASCULAR NOURISHMENT: TEARS AQUEOUS
HUMOUR LIMBAL
CAPILLARIES OXYGEN GRADIENT: FROM TEARS TO
AQUEOUS METABOLISM: AEROBIC : MAJOR ANAEROBIC :
MINOR
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NERVE SUPPLY
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NERVE SUPPLY..
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LYMPHATICS IT’S DEVOID OF LYMPHATICS
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TRANSPERANCY OF CORNEA DEHYDRATED STATE ABSENCE OF BLOOD VESSELS AND PIGMENTS
UNIFORM REFRACTIVE INDEX UNIFORM SPACING OF COLLAGEN FIBRES
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FUNCTIONS ALLOWING TRANSMISSION OF LIGHT FOCUS THE LIGHT MAINTAINS STRUCTURAL INTEGRITY
OF GLOBE PROTECTION AGAINST INFECTION,
UV, NOXIOUS AGENT
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CORNEAL OEDEMA MEGALOCORNEA (>13mm) MICROCORNEA (<9mm) CORNEAL ULCER ARCUS SENILIS - DEGENERATIVE KAYSER FLEISCHER RING
APPLIED…
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DONATE EYES…
DONATE EYES…
THANK U
SPECIAL THANKS TO: N.SUDARSAN