part_of
part of
part of
develops_from
develops from
developmentally induced by
developmentally_induced_by
contributes to morphology of
anatomical entity
anatomical entity
connected anatomical structure
anatomical structure
lens of camera-type eye
ZFA:0000035
lenses
CALOHA:TS-0545
AAO:0010348
RETIRED_EHDAA2:0000975
The eye of the adult lamprey is remarkably similar to our own, and it possesses numerous features (including the expression of opsin genes) that are very similar to those of the eyes of jawed vertebrates. The lamprey's camera-like eye has a lens, an iris and extra-ocular muscles (five of them, unlike the eyes of jawed vertebrates, which have six), although it lacks intra-ocular muscles. Its retina also has a structure very similar to that of the retinas of other vertebrates, with three nuclear layers comprised of the cell bodies of photoreceptors and bipolar, horizontal, amacrine and ganglion cells. The southern hemisphere lamprey, Geotria australis, possesses five morphological classes of retinal photoreceptor and five classes of opsin, each of which is closely related to the opsins of jawed vertebrates. Given these similarities, we reach the inescapable conclusion that the last common ancestor of jawless and jawed vertebrates already possessed an eye that was comparable to that of extant lampreys and gnathostomes. Accordingly, a vertebrate camera-like eye must have been present by the time that lampreys and gnathostomes diverged, around 500 Mya.[well established][VHOG]
FMA:58241
This class excludes compound eye corneal lenses.
MA:0000275
TAO:0000035
BTO:0000723
EHDAA:9057
OpenCyc:Mx4rvVj0fZwpEbGdrcN5Y29ycA
XAO:0000008
MAT:0000141
SCTID:181169005
eye lens
EV:0100343
lens
lens crystallina
UBERON:0000965
UMLS:C0023317
uberon
VHOG:0000169
MESH:A09.371.509
EMAPA:17838
crystalline lens
NCIT:C12743
camera-type eye lens
MIAA:0000141
The lens is avascular and nourished by diffusion from the aqueous and vitreous
Wikipedia:Lens_(anatomy)
ocular lens
Transparent part of camera-type eye that helps to refract light to be focused on the retina.
anterior segment of eyeball
vasculature
retinal neural layer
ectoderm-derived structure
transparent eye structure
lens vesicle