Enviro Testers Optica For Eyes Handheld Refractometer

This optica for eyes handheld refractometer has a sphere tolerance of ±0.5 D, a cylinder tolerance of ±0.5 D, and a battery voltage of 11.1 V.

SKU: ETEHRFM-258 Category:

Technical Specifications

Sphere Range -6.0 D to +8.0 D, -9.0 D to +2.0 D
Sphere Interval 0.25 D to 0.1 D
Sphere Tolerance ±0.5 D
Cylinder Range -3.0 D to +3.0 D
Cylinder Interval 0.25 D to 0.1 D
Cylinder Tolerance ±0.5 D
Axial Of Astigmatism Range 1° to 180°
Axial Of Astigmatism Interval
Axial Of Astigmatism Tolerance 1.25 D to 3.00 D, 0.25 D to 1.00 D
Working Distance On Adult/Infant Mode 13.18 in (335 mm)
Working Distance On Myopia Mode 10.55 in (268 mm)
Wavelength 850 nm ±20 nm
Output Of Laser Radiation 150 um to 200 um
Data Acquisition Time 2 sec
Battery Voltage 11.1 V

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