<prompt> Fluoresciene stain is used in the eye to stain -CorneaRetinaChoroidIris  <response>: Ans. is a i.e., Cornea Important corneal examinationsUsed foro Keratometry, Corneal topography o Specular microscopyo Slit lampo Padiymetero Placidos disco Fluorescein. Alacian blue Ben sal rose staino Window reflex, slit lamp biomicroscopy, Placidos discCurvature of cornea Corneal endothelial densityCorneal opacity Thic kness of cornea Corneal sheen Corneal stainingCorneal surface 