Draw a labelled sketch of the human eye.

The human eye is a spherical organ, responsible for perceiving visual stimuli. It is enclosed within the eye sockets in the skull and is anchored down by muscles within the sockets.

Sclera: A white visible portion made up of dense connective tissue and protects the inner parts.

Conjunctiva: It lines the sclera and is made up of stratified squamous epithelium. It keeps our eyes moist and clear and provides lubrication by secreting mucus and tears.

Cornea: It is the transparent, anterior or front part of our eye, which covers the pupil and the iris. The main function is to refract the light along with the lens.

Iris: It is the pigmented, coloured portion of the eye, visible externally. The main function of the iris is to control the diameter of the pupil according to the light source.

Pupil: It is the small aperture located in the centre of the Iris. It allows light to enter and focus on the retina.

External components include:

  • Sclera
  • Conjunctiva
  • Cornea
  • Iris
  • Pupil

Internal components include:

  • Lens
  • Retina
  • Optic nerve
  • Aqueous Humour
  • Vitreous Humour

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