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Corneal Topography Machine is a diagnostic tool that provides 3-D images of the cornea. The cornea is the outer layer of the eye, responsible for about 70 percent of the eye’s focusing power. Features of Corneal Topography Machine: 1.By PLACIDO cone, 31 rings, a total of 7936 points. 2.Through calculation and analysis, 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. 3.Can be used in preoperative examination and postoperative effect evaluation of corneal refractive surgery, can guide wearing contact data lens, to improve the accuracy of adaptive contact lens. Technical Specifications of Corneal Topography Machine： Model Measuring method Placido cone Coverage 10.91mm(Diameter) Curvature Radius 5.5mm-10.0mm Diopter Range 33.75D-61.36D Precision ±0.02mm PlacidoRings 31 rings Measurement Points 7936 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 With Keratoconus detecting function With