Optic cup (anatomical)
Optic cup segmentation: type-II fuzzy thresholding approach and blood vessel extraction
... segmenting optic cup using two-dimensional fundus images. Cup segmentation is the most challenging part of image processing of the optic nerve head due to the complexity of its ...the ...
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Combinatorial regulation of optic cup progenitor cell fate by SOX2 and PAX6
... the optic vesicle receives signals from the surface ectoderm telling it to invaginate, forming the bilayered optic ...the optic cup gives rise to the neural retina (NR) and the outer layer ...
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An efficient optic cup segmentation method decreasing the influences of blood vessels
... reducing optic cup segmentation errors caused by blood ...in optic cup ...of cup region in nasal and temporal side after threshold processing to recover the vessel ...through ...
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Lhx2 links the intrinsic and extrinsic factors that control optic cup formation
... the optic vesicles ...the optic cup ...the optic neuroepithelium into neural retina, retinal pigment epithelium (RPE) and optic ...and optic fissure closure defects (coloboma) ...
12
Secreted frizzled related proteins are required for Wnt/β catenin signalling activation in the vertebrate optic cup
... developmental events mediated by Wnt signalling activation. Here, we have addressed these questions by investigating the functional consequences of Sfrp disruption in the canonical Wnt signalling-dependent specification ...
6
ojoplano mediated basal constriction is essential for optic cup morphogenesis
... During optic cup folding, the feet of RPCs attach to the basal lamina of the retina and form an array of narrow parallel cytoplasmic extensions that nuclei do not enter (zone of nuclear exclusion, ...
11
Title : Optic Disc and Optic Cup Detection Using Super Pixel Classification Based on PCA & Mathematical MorphologyAuthor (s) :Sreelakshmi B L, M.Deepa
... the optic nerve is progressively damaged and it leads to vision ...proposes optic disc and optic cup segmentation using superpixel classification for glaucoma ...In optic disc ...
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Automatic Localisation of Blood Vessels, Optic Disc and Optic Cup using Selfish Gene Algorithm
... So, optic disc detection is an important step for diagnosis of these two diseases as well as some other diseases related to ...in optic disc shape and area may indicate disease ...the optic ...
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Roles for Dicer1 in the patterning and differentiation of the optic cup neuroepithelium
... The embryonic ocular neuroepithilium generates a myriad of cell types, including the neuroretina, the pigmented epithelium, the ciliary and iris epithelia, and the iris smooth muscles. As in other regions of the ...
12
β catenin controls differentiation of the retinal pigment epithelium in the mouse optic cup by regulating Mitf and Otx2 expression
... the dorsal optic vesicle at embryonic day (E) 9.5 (Fig. 1A), in the peripheral and dorsal RPE in the optic cup at E12.5 (Fig. 1D-F), and in scattered cells at embryonic and postnatal ages (Fig. ...
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Analysis of Optic Disc and Vertical Cup Disc Ratio among Glaucoma Suspects in a Black Population
... of optic cup size in normal eyes, with VCDRs from ...in cup size results from the physiological relation between the size of the cup and the size of the optic ...asymmetric cup ...
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Early development of the nervous system of the eutherian Tupaia belangeri
... Figure 19. Morphogenesis of the epibranchial placodes and gan- glia in Tupaia belangeri. 3-D reconstructions of 13- to 17-day- old embryos classified according to six phases of ocular devel- opment: surface ectoderm ...
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A Brief Review of Image Segmentation Based on Thresholding Technique
... of optic disc and cup based on adaptive thresholding using features from the ...the optic nerve head region in both the channels. The optic disc is segmented from the red channel and ...
6
Establishment of the neurogenic boundary of the mouse retina requires cooperation of SOX2 and WNT signaling
... Additional file 5: Deletion of Ctnnb1 in Sox2 - ablated optic cup progenitor cells (OCPCs) does not rescue increased CyclinD1 or ectopic expression of CyclinD3. CyclinD1 and CyclinD3 exp[r] ...
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Lens specific expression of transforming growth factor beta1 in transgenic mice causes anterior subcapsular cataracts
... nea, the anterior optic cup, and the mesenchymal cells sur- rounding the eye (Fig. 8 B). No significant expression was ob- served in the lens. T b RI was also expressed at significant levels in the anterior ...
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Assessment of stereoscopic optic disc images using an autostereoscopic screen – experimental study
... the optic disc (optic disc rim) whilst stereo viewing. The optic disc edge was then traced with the cursor, clicking to place a contour, which was dis- played in the cursor ...the optic ...
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Automated Glaucoma Detection using Cup to Disc Ratio
... of cup and disc. Cup to disc ratio is calculated for given data ...the optic nerve head is divided into two zones. 1] optic cup 2] neuretinal ...rim. Optic cup is bright ...
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FPGA Implementation of Glaucoma Detection using Neural Networks
... The proposed system will be very useful to detect glaucoma efficiently so that the disease can be diagnosed in the early stages. The system does not depend on trained glaucoma specialist and expensive HRT/OCT machines. ...
6
Analysis of Human Retinal Images for Automated Glaucoma Screening
... the optic nerve due to increase in intraocular pressure of ...of Optic nerve head damage in retinal fundus images is more promising and ...of optic disc (OD) is a standard procedure used for ...
9
Identification of Cup-Disk Ratio for Glaucoma Prone Eyes
... the cup and disk ratio (CDR) of the eye is most important ...the Optic Disk detection of the eye is must for this ...the optic nerve. Because of increase in IOP, the cup size begins to rise ...
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