TOPO REF KERATOMETER Tomey Model RT-7000, NEW! * 3 systems in one device * Automatic alignment and triggering * Color touch screen * Various topography views * Electronically controlled chin rest * Joystick orientation * Pupil and corneal-measurement Refractive Power Measurement Spherical Refractive Power (S) Measurement Range -25.00 D to +22.00 D (at VD = 12.0 mm) Display Unit 0.01 D / 0.12 D / 0.25 D Cylindrical Refractive Power (C) Measurement Range 0 D to ± 10.00 D (at VD = 12.0 mm) Display Unit 0.01 D / 0.12 D / 0.25 D Astigmatism Axial (A) Measurement Range 0 ° to 180 °Display Unit 1 ° Minimum Pupil Diameter Ø 2.2mm Vertex Distance 0mm / 12.0mm / 13.5mm / 14.0mm / 15.5mm / 16.0mm Measurement Time 0.2 seconds / single eye Corneal Curvature Measurement Corneal Curvature (K1, K2, AVG) Measurement Range 5.00 mm to 11.00 mm Display Unit 0.01 mm Corneal Refractive Power (K1, K2, AVG) Measurement Range 30.68 D to 67.50 D (n = 1.3375) Display Unit 0.01 D Corneal Astigmatism (CYL) Measurement Range 0 D to 10 D (n = 1.3375) Display Unit 0.01 D Axis Of Corneal Astigmatism (AXS) Measurement Range 0 ° to 180 ° Display Unit 1 ° Measurement Area Cornea Ø 3.0 mm(at 8.00 mm corneal curvature) Measurement Time 0.1 seconds / single eye Measurement Of Corneal Shape Display Range 9 D to 100 D