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What is the spatial resolution of the oximetry images?

The full camera sensor size is 1600 pixels x 1200 pixels. While operating the fundus camera in the 50° field of view, the first degree and second degree vessels are 10 to 20 pixels across. The area of the retina which is covered by the oximeter can be seen on this image (50° field of view):

Normal_retina_570nm_r.png 

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