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Portable Network Graphic  |  1996-08-09  |  31KB  |  465x384  |  8-bit (142 colors)
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OCR: IRIS AND LIGHT S YOU MOVE from light tc Pupil ] Inner iris dark, takes a while to see muscles clearly This because your eye must adapt to new light level. Iris muscles adjust within your eye, controlling the amount of light entering ir by changing the size of the pupil. Iris NORMAL LIGHT In normal light, both the inner Outer iris and outer iris muscles are partly muscles contracted to balance each other When the retina senses change of light. it sets off reflex to alter the size of the pupil. BRIGHT NORMAL DIM LIGHT UGHT LIGHT NORMAI