Technical specifications – Welch Allyn SureSight Vision Screener Autorefractor - User Manual User Manual

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Technical Specifications

Technology:

Welch Allyn proprietary autorefractor hardware/
algorithm

Working distance:

14 inches (35 cm.)

Distance detection:

Automatic, with audible and visual cues

Eyepiece:

Illuminated target for easy aiming

Data acquisition time:

2.4s/eye

Data acquisition:

Measures and averages 5 to 8 readings/eye

Reliability measure:

Indicates number of and variation among
measurements for the given eye

Diopter display:

1/8 or 1/4 diopter increments

Axis:

1( increments

Stand:

Compact charger and SureSight storage

Weight:

Approximately 2.0 lbs. (0.9 Kg.)

Dimensions:

6.5” x 7.75” x 2”

Class II equipment:

Continuous operation.

Transport/Storage:

-20°C~49°C, 10%(100% R.H. Max, 500hPa -
1060hPa Altitude

Operating:

10°C~30°C, 30%(75% R.H. Max, 500hPa - 1060hPa
Altitude

Measurement Range:

Sphere: +6.0 to -5.0 Diopters

Cylinder: ( 3 Diopters

Battery voltage:

7.2v nominal (Lithium Ion)

Battery life:

More than 3 hours of continuous usage