anatomy of cornea copy

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ANATOMY OF CORNEA Sudarsan

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Page 1: Anatomy of cornea   copy

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