Description Features Accurate: Shack-Hartmann based autorefraction Anyone: Refracts babies, children, and adults, even wearing glasses No dark room required; the refractometer works in normal light conditions Display: 5 inch touch screen Technical specifications Sphere range -10.0 D to 10.0 D, step 0.25 D Cylinder range -5.0 D to 5.0, step 0.25 D Axis of astigmatism 1° to 180°, 1° Data acqusition time <1s / eye Connections USB, Wifi; easy data transfer to pc Accuracy 5° Resolution 1° Battery Recargable lithium batteries, 6 hours of duration, Replicable Size 7.08 in x 5.11 in x 4.33 in (180 mm × 130 mm × 110 mm)
