Handlight Manufacturers

A handlight is used to check the pupils’ reaction to light. A poor light reaction suggests that the visual loss is due to a problem in the ipsilateral retina or optic nerve. The light is shone into one eye and then swung briskly to the other eye. The normal pupillary reaction is initial constriction or no change in the pupil size on swinging the light to the second eye. Pupil dilation on arrival of the light from the normal eye to the involved eye is an afferent pupillary defect.