Functions of different parts of the eye

• Cornea function

  Transparent, curved surface that refracts (bends) light to help focus it.
• Iris function

  Controls the size of the pupil to regulate the amount of light entering the eye.
• Pupil function

  A hole in the centre of the iris that allows light to enter the eye.
• Lens function

  Changes shape (by accommodation) to focus light onto the retina.
• Ciliary Muscles function

  Control the shape of the lens for focusing on near and distant objects.
• Suspensory Ligaments function

  Connect the lens to the ciliary muscles and adjust its shape.
• Retina function

  Contains light-sensitive receptor cells (rods and cones) that detect light and colour.
• Optic Nerve function

  Carries electrical signals from the retina to the brain to process vision.
• Sclera function

  Tough, white outer layer that protects the eye from damage.
• Blind Spot function

  The area where the optic nerve exits the eye; has no light receptors, so no image is detected.
• Fovea function

  A small area in the retina with a high concentration of cone cells, providing sharp central vision.