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LED Vision Chart Distance Visual Acuity Chart
Refractometer
Sphere：-25-+20D (VD=12) 0.125D step
Cylinder：-8~+8D,0.125D Step
Axis：0~180° (1"step)
PD：5~-90mm, 1mm step
Min.Pupil Size：φ2mm
3D tracking and auto focus
Just rotate to any position, it will automatically focus the eye and get the value
Refractive measurement with hexagon prism
With high quality of hexagon prism and highly sensitive CCD , it provides unmatched accuracy and reliability
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United States
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