To develop a compact, desk mounted (slightly larger than an augmented reality headset) self-imaging, non-mydriatic, 45+ degree wide-angle, high resolution retinal imaging device. Machine vision algorithms will demonstrate the ability to detect differences in retinal images (current scan vs. baseline image). The device will be referred to as the Advanced Retinal Imager (ARI). Lessons learned from this device will be used to refine a final design suitable for use in spaceflight that can be built in a future phase. This device will save significant astronaut time due to the self-testing feature (only one astronaut needed to image the retina vs. two with the current technology) and not needing to dilate the pupil of the astronaut being imaged (vs. currently dilation takes an astronaut out of commission for several hours).