Functions of the eye parts

• Functions of the ciliary body 


  • controls the lens' curvature or thickness using ciliary muscles.

  • a thickened region at the front of the choroid
• Functions of the choroid 


  • Middle layer of the eye (between sclera & retina) • Pigmented black to prevent internal light reflection. • Provides oxygen and nutrients via blood vessels.
• Functions of suspensory ligament 


  • Connects the lens to the ciliary body, helping adjust lens shape.
• Functions of the cornea


  • Transparent, dome-shaped layer. • Refracts most of the light entering the eye.

  • Refracts or bend light rays into the eye.
• Functions of the vitreous chamber


  • Space behind the lens filled with jelly-like vitreous humour. • Maintains eye shape and helps refract light onto the retina.
• Functions of the lens


  • Transparent and elastic, changes shape to focus light on the retina.

  • Has a biconvex structure
• Functions of the aqueous chamber


  • Space between the lens and cornea filled with aqueous humour. • aqueous humour helps:

  refract light into the pupil and maintains eye pressure.
• Functions of the fovea


  • Small yellow spot in the retina for sharpest vision. • Located directly behind the lens.

  • contains only cones
• Functions of the optic nerve


  • Transmits nerve impulses from the retina to the brain. • No rods or cones at the point where it leaves the eye (blind spot).
• Functions of the retina


  • Light-sensitive innermost layer of the eye. • Contains rods (low light) and cones (color vision), aka photoreceptors
• Functions of the blind spot


  • Area where the optic nerve leaves the eye, and there's no retina • Lacks photoreceptors, so it cannot detect light.