... .Light rack with integral casting, CNC machining, measuring system is more stable, good consistency.Color LCD ... measurementKEF mode: Corneal curvature measure Refractive measure: Vertex Distance: 0.0,12.0,13.75,15.0mmSphere: ... 25D step)Axis: 1°~180°(1° step)Pupil Distance: 30~85mmMin. pupil diameter measurable: φ2.0mmTarget: ... of our auto refractor/keratometer: HIGH QUALITY auto refractor/keratometer