7. 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
8. 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
9. 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
10. 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
11. 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
12.
13. 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
14. 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
16. 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