Which structure controls the size of the eye's opening
{"Image DocumentName": "Which structure controls the size of the eye\u2019s opening?", "Image ImageDescription": "Which structure controls the size of the eye\u2019s opening?", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}