Handheld Retinal Imaging—at the Cellular Level

Optical coherence tomography (OCT), adaptive optics and other technologies have opened up a world of possibilities for imaging the retina, right down to the photoreceptor cells (rods and cones) that are the gateway to vision. But the equipment for cellular-resolution imaging is bulky, heavy and inconvenient, making it all but useless for addressing one key problem: tracking how the retina grows and matures during infancy and early childhood.

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