Page:Plates illustrating the natural and morbid changes of the human eye.djvu/14

8 are thinner than in the healthy retina, become more indistinct near the vitreous, and many project into it.

PLATE II. Fig. I.

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

(1.) Vitreous substance attached to the retina.

(2.) Fibre of connective tissue. The connective tissue fibres, the course of which can still be recognized, are abnormally thin and ill-defined.

(3.) Traces of the outer membrana limitans.

(4, 5.) Granules.

The optic nerve fibres, the ganglion cells, and the rods and bulbs have disappeared.

Fig. 2. Portion of vitreous substance (× 500) from an eye suffering from Acute Glaucoma. The vitreous substance appeared greyish, semiopaque. It was taken from near a large blood spot in the retina, and consisted of semiopaque and of transparent filaments (as seen in the healthy vitreous substance) mixed up with few granule cells.

Fig. 3.

Portion of retina viewed from the surface next the vitreous chamber from an eye suffering from Chronic Glaucoma.

(1.) Peculiar large globules, situated in the retina, seen through the layer of (?) optic nerve fibres.

(2.) Blood-vessel of the retina.

(3.) (?) Optic nerve fibres.

Figs. 4, 5, 6.

Varieties of blood-vessels, probably veins, and peculiar globes (× 200) found in the glaucomatous retina, of which Fig. 3 represents a portion.