Maintenance and care
000000-1520-928_GA_EN_021013
Ambient conditions for intended use and on-site storage
Operating temperature
Relative humidity
Altitude
+10 °C to +40 °C
30 % to 85 % non-condensing
up to 3000 m above sea level
Note: We reserve the right to make changes to the design and package check list in accordance with
technical advances.
Ambient conditions for off-site transport and storage in original packaging
Storage/transport temperature
Relative humidity
-20 °C to +60 °C℃
Max. 95 % non condensing
Measuring range
Wavefront Range of action sphere: -20 D to +20 D (3.5 mm pupil)
Range of action sphere: -15 D to +15 D (5.5 mm pupil)
Range of action cylinder: 0 D to +8 D
Axis: 0° to 180°
Measuring surface: 2.0 mm to 7.0 mm (three zones)
Number of measuring points: up to 1,500
Acquisition time: 0.2 s
Method: Hartmann-Shack
Reference wavelength
1
: 555 nm acc. to ISO 24157
Corneal topography No. of rings: 22 (18 complete rings)
Number of measuring points: up to 3,425
Detected corneal surface at 42.125 D: ∅ 0.75 mm to 9.4 mm
Diopters: Measuring range: 25 D to 65 D
Accuracy: ±0.05 D (±0.01 mm)
Reproducibility: ±0.10 D (±0.02 mm) and type A acc. to ISO 19980
1
Reference wavelength for the interpretation of refractive errors (corresponds to maximum luminous efficiency
curve V
λ
of the eyes of test persons in daylight)
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