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HD Analyzer
™ Chapter 3: Functioning
- 24 -
should not try to focus it, but rather simply look at the focus point in a relaxed manner
throughout the sequence.
3.2.2.3 Instructions to the patient during the "OSI" and "Light Condition"
measurements
When initiating the sequences to determine the optical quality (OSI and Light
Condition), ask the patient to try to focus on the focus point at all times.
3.2.2.4 Instructions to the patient during the "Tear Film" measurement
At the start of the tear film analysis sequence, ask the patient to look at the focus
point in a relaxed manner.
If the measurement is performed following sound patterns, ask the patient to blink
only when he/she hears the sounds.
If no sound pattern is followed, have the patient try not to blink, or blink as little as
possible, during the entire process (20 seconds).
Also, advise the patient to close the eye not being analyzed to avoid stimulating the
lacrimal glands and producing "extra" tears.
3.2.2.5 Instructions to the patient during "Depth of Focus" measurement
The pseudoaccommodation sequence (Depth of Focus) is solely indicated for those
patients that have, to a great extent or even totally, lost their ability to accommodate.
Regardless, at the start of the sequence, the patient is asked to try to focus on the
stimulus at all times.
3.2.2.6 Instructions to the patient during the Purkinje sequence
At the start of the Purkinje sequence, the patient is asked to center his/her vision on
the red dot. The patient is also asked to try not to blink while the software captures
the images.
Содержание HD Analyzer OQAS
Страница 80: ...HD Analyzer Chapter 3 Functioning 80 Figure 54 Example of a printed OSI report...
Страница 81: ...HD Analyzer Chapter 3 Functioning 81 Figure 55 Example of a printed Light Condition report...
Страница 82: ...HD Analyzer Chapter 3 Functioning 82 Figure 56 Example of a printed Depth of Focus report...
Страница 83: ...HD Analyzer Chapter 3 Functioning 83 Figure 57 Example of a printed Tear Film report double pass images...
Страница 84: ...HD Analyzer Chapter 3 Functioning 84 Figure 58 Example of a printed Tear Film report sound patterns...
Страница 85: ...HD Analyzer Chapter 3 Functioning 85 Figure 59 Example of a printed pre operative Purkinje report...