The CSO Sirius Topographer and Scheimpflug Camera is a combined device consisting of placido’s disc and a slit illumination system with a Scheimpflug camera which rotates around the eye to give an automatic measurement of an over-all view of the anterior segment of the eye. It provides topographic data on elevation and curvature of the entire anterior and posterior corneal surface,as well as the thickness of the cornea and depth of anterior chamber of the eye ,its used before refractive surgeries and cases of kerataconus detection and monitoring, and glaucoma screening.