Chapter 5 - About capturing an image
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Check that the equipment and personnel required for the procedure are available. Resources will
also be required to deal with any possible patient reactions.
Note
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The early-phase criteria can be customized by selecting Settings > Multi-frame tab from the
Welcome screen.
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The number of images to be captured and the seconds between each capture can be set. To
disable this feature for future sessions select 0 images and 1 second.
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You can stop image capture during the early-phase by pressing the image capture button on
the hand control. This can be useful if the patient has a reaction to the fluorescein.
How to capture Autofluorescence images
The optomap® af procedure begins with capturing a set of optomap® plus images and then the
optomap® af image capture step follows:
Warning
No fluorescent dye should be introduced into the patient.
optomap® af images are captured using a green laser light for illumination. This contrasts with the
traditional use of blue illumination or white light for autofluorescence imaging. Green light
autofluorescence differs, and allows a different visualization of macular pathologies since macular pigment
does not interfere. Also the Optic Nerve Head is clearly visible when green laser light is used for
autofluorescence imaging.
The following procedure can be used for guidance, but you should follow your clinic's protocol if available:
1. Complete the preliminary checks, see Single Image Preliminary checks on page 24.
2. Tell the patient what will happen, see Patient instructions.
3. If lids and lashes obscure the images to an unacceptable level use your procedures to reduce the
image being obscured, see Minimizing lids and lashes in images.
4. Align the patient, see Capturing images.
5. Capture the optomap® af images.
6. Optional: If required, you can now image using an eye steering direction, see How to do eye
steering on page 29.
7. You can review the image quality of all the images captured.
8. Click Right Eye (OD) or Left Eye (OS) to capture more images.
9. Discard any unwanted images, see Discarding Images. All other images will be saved to the Image
Server PC.
Multi-Frame Settings
These settings define the number of images and the capture frequency applied when early-phase
optomap® fa images are captured on a 200Tx device. You can also set whether optomap® fa procedures
can be paused.
Early-Phase Settings
In the early-phase, the system will take multiple images when the capture button on the hand control is
pressed, How to use the hand control on page 11. The number of repeated images, and the time between
them is configurable. The minimum period between images is 1.2 seconds.
In the early-phase, the system will capture images until the defined number of images have been captured
or the hand control capture button is pressed again. You should set the criteria to meet your clinic's
procedure.
You can capture a single optomap® fa image by either:
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