APC AR1100 Manual do Operador descarregar pdf (Página 57)

OPERATING PROCEDURES: AR (refractive error) and KM (corneal curvature radius) Measurements

4 Measurement starts.

Measurements take place automatically when the device is best aligned and focused on the

eye (when the auto-shooting function is turned on).

* When the auto-shooting function is turned off, press the start button to start measurement.

KM measurement takes place.

A short beep is produced and KM-measured data and measurement count are dis-

played.

KM measurement completes.

Pre-AR measurement takes place and the scenery chart is fogged.

AR measurement takes place.

A short beep is produced and the AR measured data and measurement count are dis-

played.

The way of fogging in the second and subsequent measurements varies according to the 4. MEAS

MODE parameter setting.

AR measurement completes.

• The operator can start measurement by pressing the start button.

Press the start button to start measurement when measurement has difficulty starting for patient’s who

blink often.

• Instruct the patient not to blink during measurement.

• When an error or error data appears, the cause may be one of those described below. If

those signs appear again after repeating measurement, check the following:

a. Patient blinked during measurement.

b. The eyelid or eyelashes are on the min. pupil mark during AR measurement.

c. The eyelid or eyelashes are on the mire ring during KM measurement.

d. The patient’s pupil is smaller than the min. pupil mark.

Have the patient sit in a dark room for a while and wait until the pupil diameter becomes large

enough for measurement.

e. Retinal reflection is extremely low due to an optical disease such as a cataract.

f. There is some unusual reflection on the cornea during measurement.

g. There is an extreme distortion on cornea.

CON.

Fogging is maintained on throughout the serial measurement.

This mode is useful for children who do not fixate their eyes very long.

NOR.

The patient’s view is fogged for each measurement even though the start

button is held down.

This mode is useful for patients who accommodate their eyes easily.

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APC AR1100 Manual do Operador Página 57