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Article obtained from Photonics RSS Feed.
Researchers from the University of California, Davis (UC Davis) have developed an instrument that has measured tiny, light-evoked deformations in individual rods and cones in a living human eye. The approach may one day improve detection of macular degeneration, a leading cause of blindness in people over 55.
The system is based on optical coherence tomography (OCT) and captures specialized OCT images simultaneously with scanning light ophthalmoscope images. This allows it to detect slight swelling in the outer segments of photoreceptors that occur as a side-effect of phototransduction — the process of sight. The technique is able to measure how individual rods and cones respond to light, and it could detect deformations…READ MORE