APC AR1100 Operator's Manual download pdf (Page 82)

OPERATING PROCEDURES: NT (Tonometry) Measurement: NT Mode

{ If the “CHECK THE EYE” error occurs:

Check the condition of the patient’s eye.

If the patient cannot open the eye wide or eyelashes are over the applanation area, you

have to help the patient open the eye wide.

For a watery eye, have the patient blink his or her eyes, or wipe the tears.

The error is cleared when normal measured data is obtained.

The APL error may occur in a row even though the eye seems to be in normal conditions.

In this case, reset the 21. SET LOW CONF parameter to YES and perform the measurement

again.

The measurement value is displayed with a * mark, indicating low confidence data.

For the setting method, see “2.8 Parameter Settings” (page 76).

The measurement may be performed and measured data may be displayed even though a

measurement error (APL or ALM) occurred. Such data with the * is referred to as “low confi-

dence data”.

The low confidence data is cleared together with the error message; it is also possible to

maintain the measured data with the * mark on the screen by setting the corresponding

parameter.

9 Measured data is displayed on the screen

Measured data and average data are displayed

on the screen.

After air is puffed, and the charge indicator is dis-

played for several seconds to indicate that the

device is in standby mode.

Repeat Steps 8 to 9 to perform the measurement three times or more.

*1. The intraocular pressure fluctuates with the patient’s pulse and breath. As the non-contact tonometer measures the in-

stantaneous intraocular pressure, the average of the three or more measured values should be generally regarded as the

intraocular pressure.

Eyelid is over the applanation area.

Eyelashes are over the applanation area.

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Charge indicator

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APC AR1100 Operator's Manual Page 82