Is pupillary reaction present in blind people? please, need some answers?

Depends : If all the visual fibers in one eye are lost, then the pupil will react depending upon the light shining upon the other eye (due to interconnected reflexes) (termed amaurotic pupil). Some can lose all vision and retain the pupillary fibers so the eye will react to light. If the eye is lowered in vision (legally blind) it can still react to light. Also some blindness is from trauma; fixed pupils