Miniaturized infrared cameras take colored photos of the eye

ScienceDaily | 6/20/2018 | Staff
jenny1246 (Posted by) Level 3
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Researchers at the Nara Institute of Science and Technology (NAIST), in partnership with scientists at the University of Tokyo, have devised a new fundus camera small enough to fit on a smartphone that could get around this problem. The study was described at the 2018 Symposia on VLSI Technology and Circuits this month.

NAIST Professor Jun Ohta is researching the interface of photonic materials and biomedical treatments for the eye.

Devices - Uses - Goals - Prosthesis - Vision

"We study photonic devices for biomedical uses. One of our goals is retinal prosthesis to restore vision. We work on highly sensitive imaging sensors for diagnostics of the eye," he said.

When taking a photo of the fundus, the camera must align itself with the path of light that travels through the retina to the back of the eye. The eye, however, makes regular and rapid movements, constantly changing this path. To resolve this problem, the new camera described at the symposium achieves 1000 images/s.

Challenge - Fundus - Wavelengths - Light - Camera

Another challenge when imaging the fundus is the wavelengths of light detected by the camera. To take a clear fundus image, a strong flush light must be introduced inside an eye through a pupil because it is completely dark inside the eye.

For this second problem, the researchers modified CMOS cameras. The...
(Excerpt) Read more at: ScienceDaily
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