<prompt> Cataract is caused by -HypoparathyroidismCigrate smokingNon-ionizing radiationAll of the above  <response>: Ans. is d i.e., All of the aboveCauses of CataractSystemic diseases Dermatological diseasesAge related Physical agentsToxic agentsOtherso Hypoparathyroi-dismo Ichthyosiso Senile cataracto Corticosteroidso Maternal infections CMV Toxoplasmosis Rubellao Atopic dermatitiso Sunlight UV rayso Chlorpromazineo Hypocalcemia o Werner syndromeo Traumao Busulfano Diabetes Hypergly- cemiao Rothmuds syndromeo Ionizing radiation X-ray, y-rays Neutronso Anticholinesteraseo Chloroquineo Obesityo Hypoglycemiao Amiodaroneo Severe diarrheao Dystrophia myotoniao Nonionizing radiation Infrared Microwaveo Cigratte smokingo Coppero Galactosaemiao Irono Alport syndromeo Electric shock electric cataracto Goldo Lowe syndromeo Diureticso Stickler syndromeo Vitamin A, C E deficiency o Down syndromeo Wilsons diseaseo Hypothyroidismo Galactokinase deficiencyo Neurofibromatosis type IIo Hypertensiono Heat Infrared cataract 