Description

• Ophthalmic Vision Tester VT-5C China Manual Phoropter Features 1 Elegant design of butterfly-shape look 2 Capable of checking up all-sided visible functions, precise and comfy in dimension three Exquisite production technique, with glad feel 4 gadget is applicable to ophthalmology department of hospitals and spectacle shops for precision dimension of visible functions such as myopia, hyperopia, astigmatism, eyesight balance, heterophoria, stereoscopic imaginative and prescient and eyesight amalgamation 5 color options:White or Black or gray Specifications Sphere energy Range+16 to-19, with minimal studying 0 or 0(when+0 auxillary lens or non-obligatory ±0 lens in use)+26 to-29(when non-obligatory ±10 lens is in use)Cylinder power range0 to-6, with minimum studying 0 or 0(when auxiliary lens is in use)0 to-8(when-2 auxiliary lens is in use)Astigmatic axis scale0 to 180 in five stepsCross cylinder±0 25D, reversal type (synchronized with astigmatic axis) ±0 50D optionalRotary prism0 to 20ΔD in1ΔD stepPD adjustment16mm backward and forwardForehead rest adjustment2 mmConvergenceThe optical axes of the lenses are aligned at a distance of 400mm from the vertexes of the comeas(2mm every single for appropriate and left inward) Interpupillary distance enabling convergence=57mm to 80mCorneal distance device2mm ahead and 5mm backward from typical plane: with scaleEffective field of view19mm

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