Welch Allyn Spot Vision Screener VS100, Инструкция по применению

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Cylindrical axis:
• Range: 1 to 180 degrees in 1-degree increments
• Accuracy:
± 10 degrees (for cylinder values > 0.5D)
Pupil size:
• Range: 4.0 mm to 9.0 mm in 0.1 mm increments
• Accuracy:
± 0.4 mm
Pupil distance:
• Range: 35mm to 80 mm in 1 mm increments
• Accuracy:
± 1.5 mm
Screening principle: Eccentric photorefraction (photoretinoscopy) is used to estimate the magnitude of ametropia based
on characteristics of the light reflex in the pupil.
Gaze
Corneal Light Reflex (Gaze):
• Range:
0.0to 20.0 degrees in increments of 1 degree Nasal(N) or Temporal(T)
0.0to 20.0 degrees in increments of 1 degree Inferior(I) or Superior(S)
• Accuracy:
± 1.5 degrees
EMC information
This equipment has been tested and found to comply with the limits for a Class B digital
devices, pursuant to Part 15 of the FCC Rules. This medical device equipment is suitable
for use in all commercial and domestic establishments. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
•
Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Directions for use Specifications 47