Page:Plates illustrating the natural and morbid changes of the human eye.djvu/15

Rh Fig. 4. A vein, showing (1.) Abnormal dilatations. The inner coat of the vein is missing over the most dilated portions.

(2.) A less enlarged portion of the vein, in which the inner and outer coats can be recognized.

Fig. 5.

Several smaller veins merging into a large one.

(1.) Enlarged portion.

(2.) Large globe situated in (?) an unequally dilated vein.

(3.) Large globes. Of these many could be seen in different parts of the retina. On section they were found to be lacunae among the connective tissue, occupied by some peculiar substance.

Fig. 6.

A similarly dilated vein.

Fig. 7.

The outline of a myopic eye (natural size); showing the oval or egg-shape, and an unusually bulging portion near the optic nerve in the region of the yellow spot (so called Staphyloma Posticum).

Fig. 8. The outline of a myopic eye on section (natural size).

(1.) Crystalline lens (opaque and chalky) in contact with the iris and cornea.

(2.) Vitreous chamber.

(3.) Displaced hyaloid membrane.

(4.) Space between the former and the retina (occupied by fluid).

(5.) Region of yellow spot. The tunics (retina, choroid, sclerotic) of this region (through carelessness of the lithographer) have been represented too thick. (See Figs. 9, 10.)

(6.) Optic nerve.

Fig. 9. Two parallel lines indicating the conjoined thickness of retina, choroid,