Text-book of ophthalmology . Fig. 211.—Development of Coloboma of the Chorioid. Schematic. (After Hippel, Junior.) The layers from without inwards are the mesoderm (not yet differentiated into sclera and chori-oid), and the outer layer (pigment epithelium) and the inner layer (retina) of the secondary ocularvesicle. A. The interior of the ocular vesicle is entirely filled by the lens. At the lower side the ocularfissure is wide open, and the mesoderm passes through it into the interior of the eye as far as the a point exactly corresponding to the margin of the ocular fissure the outer
Text-book of ophthalmology . Fig. 211.—Development of Coloboma of the Chorioid. Schematic. (After Hippel, Junior.) The layers from without inwards are the mesoderm (not yet differentiated into sclera and chori-oid), and the outer layer (pigment epithelium) and the inner layer (retina) of the secondary ocularvesicle. A. The interior of the ocular vesicle is entirely filled by the lens. At the lower side the ocularfissure is wide open, and the mesoderm passes through it into the interior of the eye as far as the a point exactly corresponding to the margin of the ocular fissure the outer layer of the ocular vesicleturns round the inner one and merges into it. B. Here the ocular fissure is narrower and the process of mesoderm is more slender, but expandswithin the interior of the eye. The margins of the ocular fissure as they grow up towards the processof mesoderm have rotated in such a way that the inner layer is ectropionized outward and does notmerge into the outer layer until at some distance from the f
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecteye, booksubjectophth
