Technical Specifications
| Sphere Range | -10.0 D to +10.0 D |
| Sphere Tolerance | ±0.5 D |
| Cylinder Range | -5.0 D to +5.0 D |
| Cylinder Tolerance | ±0.5 D |
| Axis Of Astigmatism Range | 1° to 180° |
This handheld device refractometer has a sphere range of -10.0D to +10.0D, a cylinder tolerance of ±0.5D, and a sphere tolerance of ±0.5D.
| Sphere Range | -10.0 D to +10.0 D |
| Sphere Tolerance | ±0.5 D |
| Cylinder Range | -5.0 D to +5.0 D |
| Cylinder Tolerance | ±0.5 D |
| Axis Of Astigmatism Range | 1° to 180° |
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