Corneal Topography Model:SW-6000 Specification: It' s used in the clinical diagnosis of corneal astigmatism, quantitative analysis of corneal shape, display the corneal curvature by data or different colors, can display axial curvature map, tangential curvature map, height map, simulated corneal lens map and corneal 3D map. Can be used in preoperative examination and postoperative effect evaluation of comeal refractive surgery, can guide wearing contact data lens, to improve the accuracy of adaptive contact lens. Measuring method: Placido cone Coverage Diameter: 10.91 mm Measuring range for curvature radius: 5.5mm-10.0mm Diopter range: 33.75D-61.36D Precision: ± 0.02mm Placido rings: 31 rings Measurement points: 7,936 points Display axial curvature map, tangential curvature map, elevation map, imitated keratoscope map and 3D cornea map Image output: High-quality color inkjet printer Adjust range: left/right 86mm; forward/backward 40mm; up/down 30mm; chinrest 5omm Cornea contact lenses fitting function Keratoconus detecting function Output: Optional printer