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CONJUNCTIVA –
ANATOMY AND PHYSIOLOGY
-AARTHY.M.R.S.
CONJUNCTIVA:
It is a thin , semi transparent mucous
membrane that covers the inner surface of the
eyelid and the white par...
PARTS OF CONJUNCTIVA:
PALPEBRAL
CONJUNCTIVA
FORNICEAL
CONJUNCTIVA
BULBAR
CONJUNCTIVA
PALPEBRAL CONJUNCTIVA:
Covering the lids
Firmly adherent
Highly vascular
Extremely thin
Strongly bound to the
tarsal ...
FORNICEAL CONJUNCTIVA:
Covering the lids
Thrown into folds
Transitional region between
palpebral and bulbar conjunvctiv...
BULBAR CONJUNCTIVA:
Covering the eyeball
Thin,translucent and
loosely attached to the
underlying sclera by
TENON’S CAPSU...
EPITHELIUM OF CONJUNCTIVA:
The inner surface of the eyelids and the outer
surface of the eyeball are lined by
STRATIFIED ...
At limbus,change into stratified
squamous non-keratinized epithelium
At lid margin,change into stratified
squamous kerat...
BLOOD SUPPLY:
Anterior conjunctival arteries derived from the
Ant.ciliary arteries
Posterior conjunctival arteries deriv...
NERVE SUPPLY:
BULBAR CONJUNCTIVA:
long ciliary nerve
Naso ciliary nerve
Ophthalmic division of trigeminal nerve
SUP.P...
INFERIOR PALPEBRAL AND FORNICEAL
CONJUNCTIVA:
Laterally-lacrimal branches of ophthalmic
division of trigeminal nerve
Me...
LYMPHATIC DRAINAGE:
Lymph vessels are arranged as a deep and
a superficial plexes in submucosa
PHYSIOLOGY OF CONJUNCTIVA:
Smooth surface
Secretes mucin and aqueous
component of tear flim
Highly vascular:supplies nu...
Conjunctiva
Conjunctiva
Conjunctiva
Conjunctiva
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anatomy and physiology of conjunctiva

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Conjunctiva

  1. 1. CONJUNCTIVA – ANATOMY AND PHYSIOLOGY -AARTHY.M.R.S.
  2. 2. CONJUNCTIVA: It is a thin , semi transparent mucous membrane that covers the inner surface of the eyelid and the white part of the eyeball (SCLERA)
  3. 3. PARTS OF CONJUNCTIVA: PALPEBRAL CONJUNCTIVA FORNICEAL CONJUNCTIVA BULBAR CONJUNCTIVA
  4. 4. PALPEBRAL CONJUNCTIVA: Covering the lids Firmly adherent Highly vascular Extremely thin Strongly bound to the tarsal plate
  5. 5. FORNICEAL CONJUNCTIVA: Covering the lids Thrown into folds Transitional region between palpebral and bulbar conjunvctiva Superior fornix - 10 mm from limbus Inferior fornix - 8 mm from limbus Lateral fornix – 14 mm from limbus Medially absent
  6. 6. BULBAR CONJUNCTIVA: Covering the eyeball Thin,translucent and loosely attached to the underlying sclera by TENON’S CAPSULE Conjunctival limbus 1mm anterior to corneal limbus
  7. 7. EPITHELIUM OF CONJUNCTIVA: The inner surface of the eyelids and the outer surface of the eyeball are lined by STRATIFIED COLUMNAR EPITHELIUM containg goblet cell which secretes mucus
  8. 8. At limbus,change into stratified squamous non-keratinized epithelium At lid margin,change into stratified squamous keratinized epithelium Presence of accessory lacrimal glands The epithelial layer contains blood vessels,Fibrous tissue and lymphatic channel
  9. 9. BLOOD SUPPLY: Anterior conjunctival arteries derived from the Ant.ciliary arteries Posterior conjunctival arteries derived from the Arterial arcade of lids which is formed by palpebral Branches of nasal and lacrimal arteries of lids ARTERIAL SUPPLY: VENOUS DRAINAGE: Palpebral and ophthalmic veins
  10. 10. NERVE SUPPLY: BULBAR CONJUNCTIVA: long ciliary nerve Naso ciliary nerve Ophthalmic division of trigeminal nerve SUP.PALPEBRAL AND FORNICEAL CONJUNCTIVA: Frontal and lacrimal branches of ophthalmic division of trigeminal nerve
  11. 11. INFERIOR PALPEBRAL AND FORNICEAL CONJUNCTIVA: Laterally-lacrimal branches of ophthalmic division of trigeminal nerve Medially-infraorbital nerve maxillary division of trigeminal nerve SYMPATHETIC: Superior cervical sympatics to blood vessels
  12. 12. LYMPHATIC DRAINAGE: Lymph vessels are arranged as a deep and a superficial plexes in submucosa
  13. 13. PHYSIOLOGY OF CONJUNCTIVA: Smooth surface Secretes mucin and aqueous component of tear flim Highly vascular:supplies nutrition to the peripheral cornea Aqueous veins drain from ant.chamber for the maintanence of IOP Helps to prevent the entry of microbes into the eye
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