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measurement range Sph: | -20, +23D |
Axis | 0-180° |
Vertex distance | 0/10.5/12/13.75/15/16.5 |
Corneal astigmatism, D | 0D – ±12.00D |
Cylinder, dpt | 0D – ±12.00D |
Measurement step | 0.01/0.12/0.25D |