. Pathology and bacteriology [electronic resource]. Ophthalmology; Eye; Eye; Bacteriology; Ophthalmology; Eye; Bacteriology; Eye. 58 ABERRATIONS IN DEVELOPMNET nerve, which enters the eye to the nasal side of the mesial line. In some people the point of attachment of the central hyaloid artery to the back of the lens is seen as a button like thickening, and in others as a plexus of lines, remnants of the branches into which it divides up. Pro- ceeding backwards from the point of attachment a floating corrugated filament can sometimes be detected. The anterior termination of the hyaline canal,
. Pathology and bacteriology [electronic resource]. Ophthalmology; Eye; Eye; Bacteriology; Ophthalmology; Eye; Bacteriology; Eye. 58 ABERRATIONS IN DEVELOPMNET nerve, which enters the eye to the nasal side of the mesial line. In some people the point of attachment of the central hyaloid artery to the back of the lens is seen as a button like thickening, and in others as a plexus of lines, remnants of the branches into which it divides up. Pro- ceeding backwards from the point of attachment a floating corrugated filament can sometimes be detected. The anterior termination of the hyaline canal, in which the branches of the central hyaloid artery lie when they reach the back of the lens, shows up in the eyes of some people as a curved line or a complete circle, which emits an asbestos like Fig. 32. Fig. 33. Fig. 34. Fig. 32.—Transverse section of the central artery of the vitreous, showing the cellular sheath and hyaloid membrane surrounding it. From a human fetal eye of between the 5th and 6th months. Fig. 33.—Transverse section of the same artery shown in Fig. 31 further forward in the vitreous. The cellular sheath has ceased, but the artery is still surrounded by a hyaloid membrane. Fig. 34.—Transverse section of the same artery shown in Figs. 32 and 33 further forward in the vitreous, after it has divided up. The canal bounded by the hyaloid membrane has enlarged. The supporting structure of the normal vitreous, viewed with the micro arc-slit lamp, presents many variations, and the distinctness with which it may be seen also varies in different individuals; generally there are layers of mem- brane presenting a fibrillar structure. This framework as a rule does not extend anteriorly to the lens surface, between it and the lens there is a relatively ''optically empty" space, which probably represents that in which the vessels of the posterior vascular sheath lie in fetal life, and which after birth remains filled with tissue fluid. The vitreous
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