It regulates the amount of light entering the eye &#150; the dimmer the lighting the more light the iris lets into the eye by widening the pupil.
(It; regulates; the amount of light) (light; entering; the eye &#150) (the iris; let; s; into the eye) (; the dimmer the lighting the more light the iris lets into the eye; by widening; the pupil)
It light the iris
regulates entering let the dimmer the lighting the more light the iris lets into the eye
the amount of light
the eye &#150
s into the eye
by widening the pupil