Disclosed herein are devices and methods for acquiring non-mydriatic images of the fundus of the eye (e.g., retina, optic disc, macula, fovea, and posterior pole). One variation of an imaging system may comprise an optical lens assembly, a first light source (e.g., a red and/or near-infrared light source), a light emitter, and control circuity comprising a light-dependent resistor that is configured to control activation of the first light source according to light output from the light emitter. The light emitter may comprise a fiber optic cable that optically connects the visible light source of the portable computing device (e.g., its flash light source) with the control circuitry.
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