Page:Plates illustrating the natural and morbid changes of the human eye.djvu/13

Rh The granules are separated from each other by fibres of the connective tissue which branch off from those which take a radiating course through the retina.

Fig. 3. A portion of healthy vitreous substance taken from near the hyaloid (1.) Oval-shaped corpuscle. Of these several occur in the same transparent filament, giving rise to a succession of dilatations of the latter.

Fig. 4.

A portion of healthy hyaloid membrane, taken from near the optic disc, and showing the surface next the vitreous chamber.

(1.) A fold of hyaloid membrane.

(2. 2. 2.) Transparent filaments, projecting from the hyaloid membrane; their extremities, after separation from the rest of the filaments, appeared enlarged.

Figs. 5, 6, 7, 8. Portions taken from the fibrous part of "Cancer" of the choroid, showing in Pig. 5 fibres, from which shoot out excrescences filled with nuclei; in Fig. 6 connective tissue corpuscles; in Pig. 7 tubes filled with cells containing granules; in Fig. 8 cells of various sizes filled with granules.

Fig. 9.

Section of a portion of retina and vitreous substance, one quarter of an inch inwards from the (deeply cupped) optic disc, from an eye the sight of which had been destroyed by Chronic Glaucoma.

(1.) Vitreous substance.

(2.) Spot where the "vitreous" touches the part of the retina occupied by the granules. The optic nerve fibres and ganglion cells have completely disappeared.

(3.) More healthy looking granules.

(4.) Transversely cut fibres of the connective tissue of the retina.

(5, 6.) Fibres of connective tissue ("radial fibres"). These fibres