CORNEA Cornea is made up of 5 Layers

  • Slides: 9
Download presentation
CORNEA Cornea is made up of 5 -Layers. 1. Corneal epithelium. 2. Anterior-limiting membrane.

CORNEA Cornea is made up of 5 -Layers. 1. Corneal epithelium. 2. Anterior-limiting membrane. 3. Substantia-propria. 4. Posterior-limiting membrane. 5. layer of endothelium.

CORNEA 1. Corneal epithelium 1 2 2. Anteriorlimiting membrane. 3. Substantia-propria. 4. Posteriorlimiting membrane

CORNEA 1. Corneal epithelium 1 2 2. Anteriorlimiting membrane. 3. Substantia-propria. 4. Posteriorlimiting membrane 5. layer of endothelium

CORNEA 1. Corneal Epithelium It is made up of stratified squamous non-keratinised epithelium. Superficial

CORNEA 1. Corneal Epithelium It is made up of stratified squamous non-keratinised epithelium. Superficial layer has microvilli- they play important role in retaining film of fluid over the surface cornea. At the periphery of cornea, the epithelium becomes continuous with- that of ocular conjunctiva.

CORNEA 2. Anterior limiting membrane. Also called Bowmans membrane. It is made up of

CORNEA 2. Anterior limiting membrane. Also called Bowmans membrane. It is made up of fine collagen fibrils embeded in matrix.

CORNEA 3. Substantia propria It is a thick layer made of regular lamina of

CORNEA 3. Substantia propria It is a thick layer made of regular lamina of collagen fibers with flattened connective tissue cells. Between them corneal corpuscles are seen –they are nuclei of fibroblasts -also called keratocytes. Transperancy of cornea is because of regular arrangement of fibers and same refractive index of fibers & ground-substance.

CORNEA 4. Posterior limiting membrane It is also called- Descemets membrane. Homogenous in nature.

CORNEA 4. Posterior limiting membrane It is also called- Descemets membrane. Homogenous in nature. It is true basement membrane & very resistant to infection. At the margin of cornea it is continuous with fibers that form a network at irido-corneal angle.

CORNEA 5. Layer of Endothelium It is also called pavement membrane. Lined by single

CORNEA 5. Layer of Endothelium It is also called pavement membrane. Lined by single layer of flattened cells. Has contact with aqueous humour.