The human eye

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The human eye is a sensory organ and manages the sight. In this article let us discuss following basic facts about the human eye.

The main parts of the eye,

Sclera

Choroid

Retina

Fovea

Lens

Cornea

Iris

Ciliary body

Pupil

Anterior chamber

Posterior chamber

Suspensory ligament

Vitreous body

Optic disk

Optic nerve


  • The eye manages the sight.
  • Eye is a sensory organ.
  • The eye is covered by a thin transparent film called the Cornea.
  • The cornea covers the iris and the frontal of the eyeball.
  • The sclera is white colour and opaque.
  • Sclera is the outermost layer of the posterior and lateral aspects of the eyeball.
  • Sclera keeps the shape of the eye and gives attachment of the extrinsic muscles of the eye.
  • The light enters to the eye via the cornea and focus on the retina.
  • The choroid is found just beneath the sclera and, it is a thin layer rich with blood vessels.
  • Iris is a circular and coloured body composed of pigment cells.
  • The lens is found behind the iris.
  • The lens is elastic, biconvex transparent disc, made up of proteins and enclosed with a transparent capsule.
  • In the front of the lens, there is a clear watery substance called aqueous fluid.
  • Behind the lens, there is a colourless and transparent jelly like vitreous humour.
  • The retina is the innermost lining of the eye.
  • The retina has photoreceptor cells called rods and cones.