The Eye

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The Eye
Part of the Eye Its Function
Cornea Refracts light into the eye
Iris Controls how much light is entering the pupil
Lens Refracts light and focuses it onto the Retina
Retina It is a light sensitive part of the eye and is
covered in receptors called cones and rods,
which detect light
Rods Sensitive to dim light but cannot sense
Cones Sensitive to colours but are not very good in
dim lighting. A lack of specialised cone cells
can lead to red-green colour blindness.
Optic Nerve Carries impulses from the receptors to the


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