Katsanis Coloboma Zebrafish (IMAGE) Duke University Caption An embryonic zebrafish with a copy-number error in its genes (at right) shows a characteristic eye defect called coloboma. An unaffected fish is at left. Credit (Christelle Golzio, Duke University) Usage Restrictions Please credit: Christelle Golzio, Duke University License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.