Text-book of ophthalmology . r capsule of the lens, and at its margin by the tissue of the liga-mentum pectinatum, beneath which lie Schlemms canal and the anterior 374 TEXT-BOOK OF OPHTHALMOLOGY border of the ciliary body. Even under normal conditions the depth of theanterior chamber is variable. It is greatest in the eyes of the young, anddiminishes with advancing age. Myopic eyes have a deep anterior chamber,hyperopic eyes a shallow one. Even in the same eye the depth of the ante-rior chamber varies, as it becomes shallower during the accommodative actfrom the protrusion of the anterior sur
Text-book of ophthalmology . r capsule of the lens, and at its margin by the tissue of the liga-mentum pectinatum, beneath which lie Schlemms canal and the anterior 374 TEXT-BOOK OF OPHTHALMOLOGY border of the ciliary body. Even under normal conditions the depth of theanterior chamber is variable. It is greatest in the eyes of the young, anddiminishes with advancing age. Myopic eyes have a deep anterior chamber,hyperopic eyes a shallow one. Even in the same eye the depth of the ante-rior chamber varies, as it becomes shallower during the accommodative actfrom the protrusion of the anterior surface of the lens. The posterior chamberis produced by the fact that the iris is not in contact with the capsule of the lensby its whole posterior surface, but only by its pupillary margin. Thusanopenspace is left between the iris and the lens, which increases in depth from thepupillary to the ciliary margin of the iris, and hence in cross section has atriangular shape. This space, the posterior chamber of the eye, is bounded. Fig. 148.—Ligamentum Pectinatum (Surface View). Magnified 700 X , which show a delicately fibrillar structure, inclose alveoli, the larger of which areelliptical, and directed so that their long axis lies parallel to the margin of the cornea. Upon the wallsof these alveoli lie cells (endothelial cells) provided with nucleus and large protoplasmic cell body;small alveoli are sometimes entirely filled by such cells. in front by the iris and to the outer side by the ciliary body, while its innerand posterior wall is formed by the lens (L, Fig. 142) and the zonule of Zinn(zi, Fig. 142), the latter bridging over the interspace between the lens andthe ciliary body. The two chambers communicate only by means of thepupil. It was a good while before people got a correct idea of the anatomical relationsexisting in the region of the anterior and posterior chamber, and even at the presenttime we very frequently find drawings which represent these relatio
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