part of part of optic stalk optic fissure Develeopment notes: As the eye starts to develop, a gap opens on the underside of each eye bud. This gap provides a way for the developing eye to be nourished. This gap, called the optic fissure, has to close before the eye is fully developed. Coloboma is the incomplete closer of the optic fissure EHDAA:4759 choroid fissure VHOG:0000655 ZFA:0001284 EHDAA2:0001319 ventral choroidal fissure choroid fissure - optic fissure TAO:0001284 UBERON:0005412 MA:0001305 XAO:0000474 EMAPA:17166 AAO:0011026 optic fissures SCTID:361508004 RETIRED_EHDAA2:0000249 Wikipedia:Choroid_fissure optic stalk fissure Groove that is in the developing ventral optic cup and through which blood vessels pass to the enclosed mesenchyme[ZFA]. a ventral fissure in the developing optic cup through which blood vessels pass to the enclosed mesenchyme[Free online medical dictionary]. optic foramen surface groove ventral part of optic cup