develops_from
tissue
lens placode
ectoderm-derived structure
lens vesicle
(...) 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 optic cup induces the overlying surface ectoderm first to thicken as a lens placode and then to invaginate and form a lens vesicle that differentiates into the lens.[well established][VHOG]
A vesicle formed from the lens pit of the embryo, developing into the crystalline lens. [TFD][VHOG]
EHDAA2:0000983
EHDAA:4737
EMAPA:17163
Portion of tissue that gives rise to the lens.
TAO:0002205
UBERON:0005426
VHOG:0001163
ZFA:0001679
hollow lens vesicle
immature lens
lens mass
presumptive lens
solid lens vesicle
the lens of zebrafish (and other teleosts) forms from delamination of cells from the lens placode; thus, there is no formation of a hollow lens vesicle, in contrast to the situation in mammals and birds (Glass and Dahm, 2004) [PMID:16496288] The lens of the zebrafish forms by delamination of lens placodal cells and not through invagination. This results in a solid spherical mass as opposed to a hollow lens vesicle. Detachment of the solid lens vesicle of zebrafish at 24b26 hpf is accomplished in part by apoptosis, similar to mammals
uberon