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Repeatability and Reproducibility of In Vivo Cone Density Measurements in the Adult Zebrafish Retina. Adv Exp Med Biol 2018;1074:151-156



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Pubmed Central ID




Scopus ID

2-s2.0-85046645800   2 Citations


Zebrafish (Danio rerio) are widely used as an experimental model for a wide range of retinal diseases. Previously, optical coherence tomography (OCT) was introduced for quantitative analysis of the zebrafish cone photoreceptor cell mosaic; however no data exists on the intersession reproducibility or intrasession repeatability of such measurements. We imaged 14 wild-type (WT) fish three times each, with 48 h between each time point. En face images of the UV cone mosaic were generated from the OCT volume scans at each time point. These images were then aligned and the overlapping area cropped for analysis. Using a semiautomated cone-counting algorithm, a single observer identified each cone to calculate the cone density for every image, counting each image twice (84 total counts). The OCT cone density measurements were found to have an intersession reproducibility of 0.9988 (95% CI = 0.9978-0.9999) and an intrasession repeatability of 136.0 ± 10.5 cones/mm2 (about 0.7%). Factors affecting image quality include gill movement during acquisition of the OCT volume and variable inclusion of non-UV cone mosaics in the contours used to generate the en face images.

Author List

Huckenpahler A, Wilk M, Link B, Carroll J, Collery R


Joseph J. Carroll PhD Director, Professor in the Ophthalmology and Visual Sciences department at Medical College of Wisconsin
Ross F. Collery PhD Assistant Professor in the Ophthalmology and Visual Sciences department at Medical College of Wisconsin
Alison Huckenpahler in the CTSI department at Medical College of Wisconsin - CTSI
Brian A. Link PhD Professor in the Cell Biology, Neurobiology and Anatomy department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Cell Count
Image Processing, Computer-Assisted
Reproducibility of Results
Retinal Cone Photoreceptor Cells
Tomography, Optical Coherence
Ultraviolet Rays
jenkins-FCD Prod-486 e3098984f26de787f5ecab75090d0a28e7f4f7c0