Labels:apple | book | donut | door | line OCR: IRIS "HE IRIS IS the coloured part of your eye that surrounds your pupil. The colour, or pigment, varies from person to person, and is inherited from your parents The iris has circular muscle within it called sphincter. It is the movement of this muscle that controls the size of the hole, or pupil, at the centre your eye By altering the size of your pupil, the iris controls the amount light entering your eye protecting from too much light and llowing you to see in dim light Pupil Adjusting the size of the pupil also helps you to focus on Iris both close and far objects.
