part of part of embryo retina embryonic intraretinal space The space separating the outer pigment epithelium and the inner neural retina of the optic cup and of the retina. EMAPA:16676 EHDAA2:0000889 (...) an essentially similar sequence of events occurs during the embryonic development of the vertebrate eye. The eye initially develops as a single median evagination of the diencephalon that soon bifurcates to form the paired optic vesicles. As each optic vesicle grows towards the body surface, its proximal part narrows as the optic stalk, and its distal part invaginates to form a two-layered optic cup. (...) The outer layer of the optic cup becomes the pigment layer of the retina, whereas the inner layer differentiates into the photoreceptive cells and neuronal layers of the retina.[well established][VHOG] EHDAA:4761 UBERON:0006253 The space separating the outer pigment epithelium and the inner neural retina of the optic cup and of the retina. [TFD][VHOG] intraretinal space VHOG:0000534 intraretinal space of optic cup EMAPA:17170 retina intraretinal space intraretinal space of retina enclosed anatomical space embryonic craniocervical region