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When power is applied to the Reichert 7, it initially performs a system check. After completion of the system check, the title screen will be displayed.
The Operator Display then displays a message to move the Forehead Rest fully to the left or right until it locks into position (if it is not already in this position).
The Reichert 7 features a fully automated alignment system that enables the instrument to align itself to the apex of the patient’s left or right eye. This innovative system makes the measurement process quicker and more comfortable for the patient. Perform the following steps to take a measurement of the patient’s eye.
- Instruct the patient to locate the air tube inside the red circle on the end of the nosepiece.
- After they have located the air tube, have the patient find the green target inside the air tube and then slowly lean forward until their forehead is on the soft pad in the middle of the Forehead Rest.
Note: If the patient cannot see the green target, use the canthus marks on the sides of the instrument to set the vertical alignment of the eye, and then ask the patient to move forward until the center of their forehead is pressed against the Forehead Rest pad.
Note: Verify that the patient is seated comfortably on the patient side of the instrument.
Note: Position the patient in a way that encourages them to lean forward with their chin as close to the instrument as possible. This will reduce the difficulties associated with misalignment and low confidence readings.
- Once the patient is leaning against the Forehead Rest, touch the Measure icon to begin the measurement process.
Note: Touching the Measure icon (one puff) will initiate a measurement with one puff. Touching the Multi Measure icon will initiate a measurement with multiple rapid puffs.
- During the positioning process, the Operator Display will change and look similar to the one shown above.
Note: The aligning icon will move around on the Operator Display when the patient is within the instrument’s acquisition zone. As the positioning system aligns to the apex of the eye, the icon will move to the center of the screen and align over the center alignment target. Once thepositioning system is aligned, the air “puff” or “puffs” are delivered to the eye and the pres- sure is acquired.
Note: If the instrument has trouble acquiring the patient’s eye during the measurement process (e.g., it keeps aligning, but never takes a reading), ask the patient to:
Remain still and try not to move
Open their eyes wider, or
Tilt their head towards the window.
Note: If the instrument still experiences difficulty aligning to the patient’s eye, refer to theMaintenance section of this manual and perform the Position Window Cleaning procedure
- After the measurement is completed for the first eye, ask the patient to move their forehead away from the instrument
- There are several options available at this point:
The Forehead Rest may be slid to the opposite side to continue taking measurements on the other eye.
All data may be cleared and other measurements taken (touch the CLEAR icon).
The data can be printed (touch the PRINT icon).
Pressing the button under the DEMO icon initiates a sample air puff. This can be used to demonstrate the air puff to the patient.
After the DEMO button is pressed and the air puff is delivered, the Reichert 7 conducts a systems check to ensure its optimum performance.
Note: The DEMO icon will not display if there are measurements displayed on the screen (Touch the DELETE icon to make it visible).
During the measurement process, the Reichert 7 may detect a condition that could create a low confidence reading, identified by an asterisk after the reading.
Asterisk readings can result from blinking or interference from a patient’s eyelashes. These measurements are highlighted with an asterisk next to the reading as shown below.
Note: If a reading is followed by an asterisk, that reading will be used in the computation of the average value. A third measurement can be taken by touching the MEASURE icon, which will result in the replacement of the asterisk reading with the new reading. Touching the MULTI MEASURE icon will take three new readings.
Measurements with the Reichert 7 are made within a few milliseconds after the instrument “puffs” the eye. Since this measurement cycle is so short, IOP readings can be acquired at different times within a cardiac pulse period. Therefore, repetitive readings for an eye may fluctuate from 2 to 4 mmHg during this cardiac period.
Occasionally a reading greater than 4 mmHg may be shown (referred to as a “flier”) due to patient movement or other reasons. The Reichert 7 distinguishes these readings by placing the value in brackets, as shown on the screen below.
Note: If a reading is in brackets (a “flier”), it will be used in the computation of the average valueand cause the average value to be out of range from the non-bracket readings. A third measurement can be taken by touching the MEASURE icon, which will replace the “flier”reading. Touching the MULTI MEASURE icon will take multiple new readings.
During the measurement process, the Reichert 7 may detect a situation where the patient’s eye is too far from the nosepiece. Should this occur, the instrument will return to the home position, and the screen will change to that shown below.
Should this situation arise, ask the patient to move away from the instrument, reposition the patient, and then proceed with the next measurement.
To print the measurement data, touch the PRINT icon. A sample printout is shown below:
If you decide not to make a printout, touch the CLEAR DATA icon. This will clear all data from the memory and the screen. The instrument is now ready for the next patient.