News
Ophthalmic Vision Tester VT-5C China Manual Phoropter
Ophthalmic Vision Tester VT-5C China Manual Phoropter
June 04, 2026
Specifications
Sphere power Range | +16.75D to-19.00D, with minimum reading 0.25D or 0.12D (when+0.12D auxillary lens or optional ±0.12D lens in use) +26.75D to-29.00D (when optional ±10.00D lens is in use) |
Cylinder power range | 0 to-6.00D, with minimum reading 0.25D or 0.12D (when auxiliary lens is in use) 0 to-8.00D (when-2.00D auxiliary lens is in use) |
Astigmatic axis scale | 0 to 180 in 5 steps |
Cross cylinder | ±0. 25D, reversal type (synchronized with astigmatic axis) ±0. 50D optional |
Rotary prism | 0 to 20ΔD in1ΔD step |
PD adjustment | 16mm backward and forward |
Forehead rest adjustment | 2.0 mm |
Convergence | The optical axes of the lenses are aligned at a distance of 400mm from the vertexes of the comeas. (2mm each for right and left inward) Interpupillary distance enabling convergence=57mm to 80m |
Corneal distance device | 2mm forward and 5mm backward from standard plane: with scale |
Effective field of view | 19mm |
