Monitor 5.7-inch Color LCD Refractive measurement:

Vertex Distance:0.0,12.0,13.75, 15.0mm Sphere: -20.00~+20.00D(0.12/0.25D step)

Cylinder: 0.00~+10.00D(0.12/0.25D step) Axis: 1~180*(1*step)

Pupil Distance: 30~85mm

Min.pupil diameter measurable: C 2.0mm Target: Automatic fogging target