A photoscreener is a device, like the iScreen Vision Screener 3000, which captures two “red reflex” images of a child’s eyes. A “normal” red reflex means light is passing through the eyes normally and focusing on the retina in a way that creates symmetrical images – oftentimes a reddish color – in both eyes. Red reflex images that are asymmetrical, have dark spots, display a white-colored crescent-shaped reflex, or don’t create a red reflex at all can all be indications of various eye abnormalities.
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