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Fluorescein Angiography (RetCam 3 System)
135
RetCam 3 and RetCam Shuttle User Manual
PN 18-000393 Rev. A
10
Fluorescein Angiography
(RetCam 3 System)
This chapter covers acquisition of still or video images using the fluorescein angiography
(FA) option. These functions are provided through the
Image Capture
screen.
•
Theory of Operation on page 135
•
Using Fluorescein Angiography (FA) Mode on page 135
•
Theory of Operation
The FA generates a narrow-band blue excitation light centered at approximately 471
nanometers. The barrier filter inserted in the handpiece has a cutoff wavelength at 510
nanometers or shorter. The FA dye absorbs the blue light and emits green light longer
than 510 nanometers, so the RetCam 3 camera can image the green fluorescence without
being overwhelmed by the blue excitation light.
Using Fluorescein Angiography (FA) Mode
NOTE
The internal backup battery never powers the FA module. Therefore, the
system must be plugged into wall power to operate in FA mode.
NOTE
The FA light source is an option for the RetCam 3 system, and your system
might not be equipped with it. Ensure that the FA light source is installed
before
scheduling an FA exam.
1.
Configure FA imaging by either editing a Preset imaging configuration or clicking
Manual configuration and selecting Fluorescein as Image Type. Click
to continue
to the
Live Imaging
screen. Verify the
FA mode
button indicates FA On
.