The cornea is the transparent, dome-shaped window covering the front of the eye. It is also protective membrane for the retina. There are no blood vessel which makes the cornea transparent and shiny. It is nourished by the nerve endings in the Limbus.


  • Epithelium is the outer layer of the cornea and it always regenerates if there is any injuries on the cornea
  • Bowman’s Layer is just beneath the Epithelium. Since this membrane is very tough and hard to penetrate, it protects the cornea from any injuiries.
  • Stroma which gives the cornea its shiny appearance is the thickest layer, located in the center of the layers.
  • Descemet’s Layer which pumps water into the eye is located between the Stroma and the Endothelium.
  • Endothelium is the inner layer of the cornea

Our eye should always be wet and nourished. The tear films keep the Epithelium wet meanwhile Aqueous keeps the Endhotelium wet.