Enjoy fantastic quality and value with the Visionix VX50 phoropter. This phoropter features easy, quick, and accurate refractions. Synchronized cross cylinders, an extended measurement range, and precision engineering guarantee long lasting performance.
Features Include:

180 Degree cylinder axis
Rotary Prisms: 20 prisms each(1 prism scale graduation)
PD Adjustment: 48-75mm(1mm increments)
Vertex Distance: 13.75mm
Sphere power range: +16.75 to -19.00
Cylinder power range: 0.00 to -6.00(0.00 to 8.00 diopters with additional lens of -2.00 diopters)
Premium optics
VX-50 Technical Specifications
Cylinder Axis0-180° degrees
Sphere Power Range+16.75 to -19.00
(+26.75 to -29.00D with +10 and -10D lenses)

Cylinder Power Range0.00 to -6.00D
PD Adjustment50-75mm, 1mm steps
Rotary PrismRotary Prism units at range of 20 with 1 scale graduation
Forehead Rest Adjustment15mm
Vertex Distance
13.75mm