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Overall dimensions, cm | 16.3х22.6х23.6 |
measurement range Sph: | -18D, +23D |
Cylinder, dpt | +/-12 |
Corneal astigmatism, D | 0, +/-12 |
Vertex distance | 0, 12, 13.5, 13.75, 15, 16 mm |
Measurement step | 0.25D |