describe the eye structire
Answers
Choroid: Layer of the eye behind the retina, contains blood vessels that nourish the retina. ... Cornea: The outer, transparent structure at the front of the eye that covers the iris, pupil and anterior chamber; it is the eye'sprimary light-focusing structure.
Functions of the Parts of Human Eye
Sclera
Protects and contains internal parts
Cornea
Cornea is responsible for maximum refraction of incident light
Aqueous Humour
Prevents collapse of the eye due to atmospheric pressure changes
Iris
Iris controls the light entering the eye by adjusting the size of pupil
Crystalline Lens
Focuses the light reflected by objects on the retina.
Ciliary Muscles
Alter focal length of the crystalline lens
Retina
Receives optical image and converts it to electrical impulses
Vitreous Humour
Maintains the shape of the eye
Optic Nerve
Carries electrical impulses to the brain. Brain interprets these impulses and produces the sense of vision.