It can be used to measure the radius of cornea's curvature and dioptor.
And it can also be to measure the axis and dioptor of cornea astigmatism.
| Measurement Range Curvature Radius | 5.5 - 11mm |
| Dioptor | 30-60D |
| Minimum Division | Radius: 0.02mm |
| Dioptor: 0.25D | |
| Minimum Surface Required for Measurement |
R=5.5mm | p1,65mm |
| R=7.5mm | p2.36mm | |
| R=11mm | 3.36mm |
