(a) Changes taking place in corneal tissue.

(b) Iris angle with particular reference to the ligamentum pectinatum.

(c) Variations in the condition of the ciliary body.

(d) Consideration of the anatomical changes that take place in glaucoma
secondary to retinal and chorioidal hemorrhage.

DR. JOHN E. WEEKS, New York City.

Discussion by DR. E. V. L. BROWN, Chicago.

III. Concerning Non-surgical Measures for the Reduction of Increased
Intra-ocular Tension.

Abstract:--

(a) The use of myotics; their preparation, method of administration, and
explanation of their action.

(b) Reduction of increased intra-ocular tension by means of various
mechanical measures, notably massage, vibration massage, suction
massage, electricity and diathermy.

(c) Indirect reduction of increased intra-ocular tension, brought about
by lowering the general vascular pressure.

(d) The relation of osmosis, lymphagogue activity, the absorption of
edema, the stimulation of capillary contractility, and the lowering of
the affinity of ocular colloids for water in their relation to the
reduction of increased intra-ocular tension.

DR. GEORGE EDMUND DE SCHWEINITZ, Philadelphia.

Discussion by DR. NELSON M. BLACK, Milwaukee.

IV. Trephining for Glaucoma.

Abstract:--

(a) The aim of the operation is the formation of a foreign-body-free
fistula.

(b) It is most important to leave uveal tissue untouched.

(c) Method of doing this explained.

(d) The area available for trephining.

(e) Method of increasing that area.

(f) Cornea splitting.

(g) Placing of trephine.

(h) Technique of using trephine.

(i) The operation is not difficult.

(j) The operation valuable as a prophylactic measure.

DR. ROBERT H. ELLIOT, F.R.C.S., Lieut.-Col. I.M.S., Madras, India.

Discussion by DR. FRANK C. TODD, Minneapolis.

V. Operations Other than Scleral Trephining for the Relief of Glaucoma.

Abstract:--

Most of the ordinary surgical procedures employed for lowering
intra-ocular tension furnish a permanent cure of certain fairly well
defined varieties of glaucoma. They also relieve the symptoms and retard
the progress of other varieties of the disease, even if they do not
perform a cure. In a third class of cases, they either have no effect
whatever in arresting the disease or they hasten its march towards
blindness.

What operative procedure gives, on the whole, the best results? In other
words, what operation is the easi