Eye development

development of the eye
Eye formation in the human embryo begins at approximately three weeks into embryonic development and continues through the tenth week.wikipedia
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Eye

eyesoculareyeball
The eye begins to develop as a pair of optic vesicles on each side of the forebrain at the end of the 4th week of pregnancy.

Embryo

embryosembryonalhuman embryos
Eye formation in the human embryo begins at approximately three weeks into embryonic development and continues through the tenth week.

Neuroepithelial cell

neuroepitheliumneuroepithelial cellsneuroepithelial
Specifically, the eye is derived from the neuroepithelium, surface ectoderm, and the extracellular mesenchyme which consists of both the neural crest and mesoderm.

Ectoderm

ectodermalectodermal tissuesEmbryonic ectoderm
Specifically, the eye is derived from the neuroepithelium, surface ectoderm, and the extracellular mesenchyme which consists of both the neural crest and mesoderm.

Neural crest

neural crest cellsneural crest cellcrest
Specifically, the eye is derived from the neuroepithelium, surface ectoderm, and the extracellular mesenchyme which consists of both the neural crest and mesoderm. Several layers such as the neural tube, neural crest, surface ectoderm, and mesoderm contribute to the development of the eye.

Mesoderm

mesodermalmiddle cell layerparietal layer
Specifically, the eye is derived from the neuroepithelium, surface ectoderm, and the extracellular mesenchyme which consists of both the neural crest and mesoderm. Several layers such as the neural tube, neural crest, surface ectoderm, and mesoderm contribute to the development of the eye.

Retina

retinal diseasesretinalretinal disease
Neuroepithelium forms the retina, ciliary body, iris, and optic nerves.

Ciliary body

ciliaryciliary epitheliumannular
Neuroepithelium forms the retina, ciliary body, iris, and optic nerves.

Iris (anatomy)

irisirisesirides
Neuroepithelium forms the retina, ciliary body, iris, and optic nerves.

Lens (anatomy)

lenscrystalline lenslenses
Surface ectoderm forms the lens, corneal epithelium and eyelid.

Corneal epithelium

outer corneal layercorneal epithelialCorneal epithelial cells
Surface ectoderm forms the lens, corneal epithelium and eyelid.

Eyelid

eyelidspalpebralpalpebra
Surface ectoderm forms the lens, corneal epithelium and eyelid.

Sclera

sclerotizedwhites of the eyessclerae
The extracellular mesenchyme forms the sclera, the corneal endothelium and stroma, blood vessels, muscles, and vitreous.

Blood vessel

vascularblood vesselsintravascular
The extracellular mesenchyme forms the sclera, the corneal endothelium and stroma, blood vessels, muscles, and vitreous.

Muscle

musclesmuscularmusculature
The extracellular mesenchyme forms the sclera, the corneal endothelium and stroma, blood vessels, muscles, and vitreous.

Vitreous membrane

vitreousanterior hyaloid membranehyaloid membrane
The extracellular mesenchyme forms the sclera, the corneal endothelium and stroma, blood vessels, muscles, and vitreous.

Tela choroidea

choroid fissuretela chorioideaTela chorioidea of the third ventricle
Through a groove at the bottom of the optic vesicle known as choroid fissure the blood vessels enter the eye.

Neural tube

neural canalneural canalsdorsal neural tube
Several layers such as the neural tube, neural crest, surface ectoderm, and mesoderm contribute to the development of the eye.

Surface ectoderm

external ectoderm
Several layers such as the neural tube, neural crest, surface ectoderm, and mesoderm contribute to the development of the eye.

Drosophila

fruit fliesfruit flyDrosophilia
Eye development is initiated by the master control gene Pax-6, a homeobox gene with known homologues in humans (aniridia), mice (small eye), and Drosophila (eyeless).

Endodermic evagination

evagination
Eye morphogenesis begins with the evagination, or outgrowth, of the optic grooves or sulci.

Optic vesicle

optic vesiclesoptical vesiclevesicle
The eye begins to develop as a pair of optic vesicles on each side of the forebrain at the end of the 4th week of pregnancy.

Optic cup (embryology)

optic cup
The optic vesicles then develop into the optic cup with the inner layer forming the retina and the outer portion forming the retinal pigment epithelium.

Invagination

invaginateinvaginatesinvaginated
During the invagination of the optic cup, the ectoderm begins to thicken and form the lens placode, which eventually separates from the ectoderm to form the lens vesicle at the open end of the optic cup.

Lens placode

During the invagination of the optic cup, the ectoderm begins to thicken and form the lens placode, which eventually separates from the ectoderm to form the lens vesicle at the open end of the optic cup.