What are the main eye parts?

Cornea: a clear dome over the iris. Pupil: the black circular opening in the iris that lets light in. Sclera: the white of your eye. Conjunctiva: a thin layer of tissue that covers the entire front of your eye, except for the cornea.

What are the eyes main functions?

The eye is a sensory organ. It collects light from the visible world around us and converts it into nerve impulses. The optic nerve transmits these signals to the brain, which forms an image so thereby providing sight.

What is the most important part of the eye?

One of the most important parts of the eye is the retina. But why is it so important? Your retina only has one job, but it is a very important one: convert the light that the eye has captured into electric signals that the brain can process.

What three parts of the eye are transparent?

What makes up an eye

  • Iris: regulates the amount of light that enters your eye.
  • Pupil: the circular opening in the centre of the iris through which light passes into the lens of the eye.
  • Cornea: the transparent circular part of the front of the eyeball.
  • Lens: a transparent structure situated behind your pupil.

What are the three layers of the eyeball and what are their functions?

The eye is made up of three layers: the outer layer called the fibrous tunic, which consists of the sclera and the cornea; the middle layer responsible for nourishment, called the vascular tunic, which consists of the iris, the choroid, and the ciliary body; and the inner layer of photoreceptors and neurons called the …

What is the eye made up of?

The eye is made up of three coats, which enclose the optically clear aqueous humour, lens, and vitreous body. The outermost coat consists of the cornea and the sclera; the middle coat contains the main blood supply to the eye and consists, from the back forward, of the choroid, the ciliary body, and the iris.

What are the 3 layers the wall of the eye is made up of?

The wall of the eye is made up of three layers namely: The outer layer, which consists of the cornea and sclera. The middle layer, which consists of the iris, the ciliary body and the choroid. The inner layer, which consists of the retina.

What are the 3 layers of the eye from superficial to deep?

From superficial to deep, they include:

  • The fibrous layer, which consists of the sclera and cornea.
  • The vascular layer, also known as the uvea or uveal tract.
  • The nervous layer, also known as the retina, which is the innermost layer of the eyeball.

What is conjunctiva?

The conjunctiva of the eye provides protection and lubrication of the eye by the production of mucus and tears. It prevents microbial entrance into the eye and plays a role in immune surveillance. It lines the inside of the eyelids and provides a covering to the sclera.