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Nanometer-scale growth of cone cells tracked in living human eye
Date:12/20/2011

etinal cells: the top and bottom of the outer segment. The team used this hidden phase information to measure microscopic changes in hundreds of cones, over a matter of hours, in two test subjects with normal vision. Researchers found they could resolve the changes in length down to about 45 nanometers, which is just slightly longer than the thickness of a single one of the stacked discs that make up the outer segment. The work shows that the outer segments of the cone cells grow at a rate of about 150 nanometers per hour, which is about 30 times faster than the growth rate of a human hair.


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Contact: Angela Stark
astark@osa.org
202-416-1443
Optical Society of America
Source:Eurekalert

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