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A Look at the Eye

Kylie Dummer Sydney Vessels

Sydney Vessels

on 6 May 2010

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Transcript of A Look at the Eye

A Look at
the Eye Cornea: transparent outer membrane that focuses light on the retina Lens: bends light rays to form a clear image at the back of the eye Retina: produces an image that is sent along the optic nerve for the brain to interpret Iris: colored part that controls the amount of light entering the pupil Pupil: dark opening of the Iris Conjunctiva: mucus membrane that lubricates and protects the eyeball (cleaner) Sclera: Forms the outer coating of the eyeball Vitreous: clear, jelly substance that fills the eye Ciliary Muscle: changes the shape of the lens Rods/Cones: Light sensitive cells Myopia (Nearsightedness) Eyeball is larger than average The refractive power is too strong Light lands in front of the retina Hyperopia (farsightedness) Eyeball is smaller than average Light lands behind the retina Refracting Power is too weak Myopia (near) Hyperopia (far) Normal eye Peripherial
Illusion )(Nearsightedness -> Concave or minus lens)( ()Farsightedness -> Convex or plus lens () Background
Images Afterimage Incongruent Lines Spatial Context
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