RETAKING THE EYE IMAGE When you select retake, the contrast level screen appears. This allows you to reset the contrast level so the edges of the rings can be found. Click on the large arrows to change the contrast. For light colored eyes go to a smaller number. For light blue eyes the setting should be about 2 and higher for darker eyes. After adjusting the contrast click on OK and the 'Capturing the Patient’s Eye Image' screen appears. Repeat the steps described above.