<prompt> Hirschberg test measures:CataractStrabismusRefractive errorGlaucoma  <response>: Hirschberg test for Tropias or manifest squint Flash a torch at the forehead Glabella of patient, ask the patient to look at the light Ohophoric- Reflection of light is exactly at the center of the pupil Heterophoric- Reflection of light is not at the center of the pupil 