Auto Refractometer VT-10
| Sphere Power Range |
+16.75D to -19.00D, with minimum reading 0.25D or 0.12D (when +0.12D auxiliary 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 in 1ΔD 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 corneas. (2mm each for right and left inward) Interpupillary distance enabling convergence = 57mm to 80mm |
| Corneal Distance Device | 2mm forward and 5mm backward from standard plane: with scale |
| Effective Field of View | 19mm |
