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Which type of scan is used to measure the layer of blood vessels at the back of the eye?
Facial recognition scan
Retinal scan
Signature kinetics scan
Iris scan
The correct answer is an retina scan. An IRIS is the colored part of the eye around the cornea (in the front of the eye) whereas the retina is at the back of the eye. http://www.alpineeyecare.com/wp-content/uploads/eyejpg.jpg . On Wiki iris and retinal is the same scan technique: https://en.wikipedia.org/wiki/Retinal_scan ...
(Comment: Wikipedia is not a reliable source.)
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