Template:Human Eyelid timeline table: Difference between revisions
From Embryology
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| {{CS10}} | | {{CS10}} | ||
| optic primordia appear | | optic primordia appear | ||
|- | |-bgcolor="F5FAFF" | ||
| {{CS13}} | | {{CS13}} | ||
| By the end of the fourth week the optic vesicle lies close to the surface ectoderm. The surface ectoderm overlying the optic vesicle, in response to this contact, has thickened to form the lense placode. | | By the end of the fourth week the optic vesicle lies close to the surface ectoderm. The surface ectoderm overlying the optic vesicle, in response to this contact, has thickened to form the lense placode. | ||
| Line 13: | Line 13: | ||
| {{CS14}} | | {{CS14}} | ||
| (about 32 days) the lens placode is indented by the lens pit. | | (about 32 days) the lens placode is indented by the lens pit. | ||
|- | |-bgcolor="F5FAFF" | ||
| {{CS15}} | | {{CS15}} | ||
| (about 33 days) the lens pit is closed. The lens vesicle and optic cup lie close to the surface ectoderm and appear to press against the surface. | | (about 33 days) the lens pit is closed. The lens vesicle and optic cup lie close to the surface ectoderm and appear to press against the surface. | ||
| Line 19: | Line 19: | ||
| {{CS16}} | | {{CS16}} | ||
| (37 days) Prior to the development of the eyelids, one small sulcus or groove forms above the eye (eyelid groove) and another below it. | | (37 days) Prior to the development of the eyelids, one small sulcus or groove forms above the eye (eyelid groove) and another below it. | ||
|- | |-bgcolor="F5FAFF" | ||
| {{CS17}} - {{CS19}} | | {{CS17}} - {{CS19}} | ||
| grooves deepen, eyelid folds develop, first below, and then above, the eye. | | grooves deepen, eyelid folds develop, first below, and then above, the eye. | ||
| Line 25: | Line 25: | ||
| {{CS19}} - {{CS22}} | | {{CS19}} - {{CS22}} | ||
| eyelid folds develop into the eyelids and cover more of the eye as the palpebral fissure takes shape. The upper and the lower eyelids meet at the outer canthus in Stage 19. | | eyelid folds develop into the eyelids and cover more of the eye as the palpebral fissure takes shape. The upper and the lower eyelids meet at the outer canthus in Stage 19. | ||
|- | |-bgcolor="F5FAFF" | ||
| {{CS20}} | | {{CS20}} | ||
| the inner canthus is established. | | the inner canthus is established. | ||
| Line 31: | Line 31: | ||
| {{CS23}} | | {{CS23}} | ||
| closure of the eyelids is complete (Note - shown as still open in some Kyoto embryo). | | closure of the eyelids is complete (Note - shown as still open in some Kyoto embryo). | ||
|- | |-bgcolor="F5FAFF" | ||
| colspan=2|Data from [[Kyoto Collection|Kyoto embryos]] with Carnegie staging.{{#pmid:7364662|PMID7364662}} | | colspan=2|Data - from [[Kyoto Collection|Kyoto embryos]] with Carnegie staging.{{#pmid:7364662|PMID7364662}} '''Links:''' {{eyelid}} | ||
|}<noinclude>[[Category:Template]][[Category:Vision]][[Category:Integumentary]][[Category:Head]][[Category:Human Embryo]][[Category:Timeline]][[Category:Table]]</noinclude> | |}<noinclude>[[Category:Template]][[Category:Vision]][[Category:Integumentary]][[Category:Head]][[Category:Human Embryo]][[Category:Timeline]][[Category:Table]]</noinclude> | ||
Revision as of 17:12, 8 January 2019
| Carnegie Stage | Event |
|---|---|
| 10 | optic primordia appear |
| 13 | By the end of the fourth week the optic vesicle lies close to the surface ectoderm. The surface ectoderm overlying the optic vesicle, in response to this contact, has thickened to form the lense placode. |
| 14 | (about 32 days) the lens placode is indented by the lens pit. |
| 15 | (about 33 days) the lens pit is closed. The lens vesicle and optic cup lie close to the surface ectoderm and appear to press against the surface. |
| 16 | (37 days) Prior to the development of the eyelids, one small sulcus or groove forms above the eye (eyelid groove) and another below it. |
| 17 - 19 | grooves deepen, eyelid folds develop, first below, and then above, the eye. |
| 19 - 22 | eyelid folds develop into the eyelids and cover more of the eye as the palpebral fissure takes shape. The upper and the lower eyelids meet at the outer canthus in Stage 19. |
| 20 | the inner canthus is established. |
| 23 | closure of the eyelids is complete (Note - shown as still open in some Kyoto embryo). |
| Data - from Kyoto embryos with Carnegie staging.[1] Links: eyelid | |
