CSEC - The Eye - functions of the various parts

THE EYE

Learn the part of the eye and the function of each part.

Parts of the eye	Function
Cornea	This dome-shaped layer protects your eye from elements that could cause damage to the inner parts of the eye.
Sclera	This is a smooth, white layer on the outside. The sclera provides structure and safety for the inner workings of the eye, but is also flexible so that the eye can move to seek out objects as necessary.
Pupil	The pupil appears as a black dot in the middle of the eye. This black area is actually a hole that takes in light so the eye can focus on the objects in front of it.
Iris	The iris is the area of the eye that contains the pigment which gives the eye its colour. This area surrounds the pupil, and uses muscles to widen or close the pupil. This allows the eye to take in more or less light
Lens	The lens sits directly behind the pupil. This is a clear layer that focuses the light the pupil takes in. It is held in place by the ciliary muscles, which allow the lens to change shape depending on the amount of light that hits it so it can be properly focused.
Retina	The light focuses by the lens will be transmitted onto the retina. This is made of rods and cones, and is connected to the optic nerves that will transmit the images the eye sees to the brain so they can be interpreted.
Ciliary Body	Ciliary body is a ring-shaped tissue which holds and controls the movement of the eye lens, and thus, it helps to control the shape of the lens.
Choroid	The choroid lies between the retina and the sclera, which provides blood supply to the eye, to gives nutrition
Vitreous Humour	The vitreous humour is the gel located in the back of the eye which helps it hold its shape.
Aqueous Humour	The aqueous humour is a watery substance that fills the eye which allows the eye to maintain its shape. If a patient's aqueous humour is not draining properly, they can develop glaucoma.
Fovea	an indentation in the centre of the retina. This small part of our retina is responsible for our highest visual acuity
suspensory ligament	the ring of tissue which holds the lens in place

Lets see how you do when you try to label the L.S. of the eye. (DO NOT CHEAT NOW ;) )