<prompt> Most common type of astigmatism in keratoconus isSimple myopiaSimple hypermetropiaIrregular astigmatismRegular astigmatism  <response>: Keratoconus usually have irregular astigmatism BL Non inflammatory ectatic condition of cornea Clinical Presentation Young females with constantly changing power of glasses with myopia high cylinder and irregular astigmatism SIGNS IN KERATOCONUS Munson sign Enlarged corneal nerves Oil droplet reflex on DDO Rizutti sign Hydrops Fleischer ring 