When your iris changes in size from light why does does the area we can see not change?
In: Biology
Because the light hitting your eye is coming [from all directions](http://www.passmyexams.co.uk/GCSE/physics/images/eye_xsection_01.jpg). If you were looking at a source of light waves which are all traveling towards your eye at the same straight angle, changing your pupil size would change the size of what you see. That’s not the way normal light works though. It’s generally bouncing everywhere all the time.
Latest Answers