part of start stage end stage immature eye groove superior ocular sulcus 2018-09-05T16:23:34Z zebrafish_anatomy Ceri dorsal ocular sulcus Transient groove in the dorsal eye lined by basal lamina. The groove extends across the dorsal retina to partially separate the nasal and temporal retinal lobes. The sulcus forms soon after optic cup formation and as the eye develops it becomes broader and shallower until it is undetectable. ZFA:0005901 segmentation:20-25 somites pharyngula:prim-5