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From Embryology
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- [[File:Stage_22_image_155.jpg|thumb|300px|Human lens development ([[Carnegie stage 22]], [[Week 8]])]] ...key role in focussing light (with the cornea) upon the neural retina. The lens embryonic origin is from surface ectoderm of the sensory placodes that form7 KB (962 words) - 11:27, 25 January 2024
- ...early description of abnormal {{vision}} development with absence of the {{lens}}. '''Modern Notes:''' {{lens}} | {{Vision abnormalities}}5 KB (728 words) - 14:09, 5 March 2020
Page text matches
- ==Lens system ==1 KB (176 words) - 21:58, 16 February 2014
- ...s on this account that the following case of failure of development of the lens in an otherwise normal human embryo is reported. ...t at lens formation. (Slides were shown demonstrating the formation of the lens in normal human embryos at various stages, together with the aphakic eye of3 KB (421 words) - 17:29, 22 January 2019
- ...r two later (about 33 days, Stage 15) the lens pit is closed: however, the lens vesicle and optic cup lie close to the surface ectoderm and appear to press ...the optic vesicle, in response to this contact, has thickened to form the lens placode.3 KB (525 words) - 15:02, 10 March 2017
- ...now the microanatomy of the retina, and the structure of the cornea, iris, lens and ciliary body. # To know the histological features of the cornea, iris, ciliary body and lens.892 bytes (127 words) - 04:27, 29 May 2017
- [[File:Stage_22_image_155.jpg|thumb|300px|Human lens development ([[Carnegie stage 22]], [[Week 8]])]] ...key role in focussing light (with the cornea) upon the neural retina. The lens embryonic origin is from surface ectoderm of the sensory placodes that form7 KB (962 words) - 11:27, 25 January 2024
- ...optic vesicles, optic stalks, optic fissure, optic cups, lens placodes and lens vesicles. * Understand the development of the retina, ciliary body, iris, lens, choroid, sclera and cornea.6 KB (896 words) - 13:26, 1 October 2009
- ...bf1c.jpg|200px|link=Carnegie stage 14]] '''Ectoderm - '''sensory placodes, lens pit, otocyst, nasal placode, primary/secondary vesicles, fourth ventricle o '''Head - '''1st, 2nd and 3rd pharyngeal arch, forebrain, site of lens placode, site of otic placode, stomodeum3 KB (354 words) - 10:32, 16 March 2020
- ...early description of abnormal {{vision}} development with absence of the {{lens}}. '''Modern Notes:''' {{lens}} | {{Vision abnormalities}}5 KB (728 words) - 14:09, 5 March 2020
- ...t 4 or 5 millimeters long, and age group XIV, Period of indentation of the lens vesicle=1 KB (145 words) - 08:50, 8 April 2020
- ...spersion. But, aside from the mechanical difficulties which arise when the lens is of the minute dimensions required for use with the microscope, other per ...placed at a prescribed distance apart, in lieu of the single double-convex lens generally used. This combination largely overcame the spherical aberration,9 KB (1,530 words) - 11:40, 16 November 2015
- ===Lens of the Eye=== ...e22-08-eye.html?zoom=6&lat=-2022&lon=2991&layers=B Anterior portion of the Lens of the embryonic eye]13 KB (1,998 words) - 11:44, 23 October 2015
- **the development of the lens1 KB (215 words) - 18:38, 11 May 2011
- ...e between optical axis and the most inclined ray accepted by the objective lens.3 KB (459 words) - 14:27, 16 February 2013
- ...ge_16|Stage 16]] - (37 days) Growth of the lens body results in a D-shaped lens cavity. Perilental blood vessels (tunica vasculosa lentis) are visible. Pri ...[Carnegie_stage_18|Stages 18]] - Mesenchyme invades the region between the lens epithelium and the surface ectoderm.9 KB (1,266 words) - 08:04, 15 October 2015
- ...sw.edu.au/wwwpig/pigb/b4l.htm Embryo stage 13] show the optic vesicles and lens placode. [http://embryology.med.unsw.edu.au/wwwpig/pigb/PigB4L.GIF Image a ...power/HumB/B1L.htm Embryo stage 22] show eye structures (anterior chamber, lens, posterior chamber, retina, optic nerve, nasolacrimal duct, extraocular mus6 KB (949 words) - 13:51, 3 October 2009
- ...into the secondary optic vesicle (see A, Fig. 7), and eventually forms the lens, which will be described later. ...ke place in the nature of the epithelial cells during the formation of the lens vesicle from this immediate point. The lids are formed by an external fold,22 KB (3,852 words) - 13:52, 30 August 2014
- ...body from the entrance of the optic nerve to the posterior surface of the lens, is the hyaloid canal, filled with lymph and lined by a prolongation of the ...nto direct contact with the lens at the equator, the rest of the posterior lens surface abutting on primary vitreous.14 KB (2,473 words) - 13:02, 1 January 2018
- Named by the sensory system and components they will form: otic placode, lens placode and nasal placode. ...Carnegie_stage_15|Stage 15]] - (about 33 days) the lens pit is closed. The lens vesicle and optic cup lie close to the surface ectoderm and appear to press7 KB (981 words) - 07:53, 15 October 2015
- ...en the lens and the retina, and others by altering the focal length of the lens itself. ...them the earlier to see their prey or their enemies. So, in amphibia, the lens is attached to the eye-cup by a protractor lentis muscle.13 KB (2,294 words) - 16:58, 26 April 2015
- * The lens vesicle has lost its lumen.2 KB (217 words) - 16:44, 24 April 2018
