A topographer is an optical instrument designed to map the surface curvature of the cornea, non-invasively. Topography is also known as corneal topography, photokeratoscopy or videokeratography. The 3D map created by a topographer aids an ophthalmologist or optometrist in the diagnosis and treatment of numerous eye conditions and scenarios such as: pre cataract surgery, pre IOL implantation, pre LASIK surgery and contact lens fitting.