<prompt> In the second stage of anaesthesia the pupil isConstrictedPartially dilatedNormal in sizeTotally dilated  <response>: Stage 1 Pupil size normalStage 2 Partially dilatedStage 3 Plane 1 normal size, Plane 2 12 dilated, Plane 3 34 dilated, Plane 4 fully dilated.Stage 4 Fully dilated fixed 