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The treatment sometimes required for cases of old iritis is iridectomy.

He also effected a great advance in ophthalmic surgery by his operation of iridectomy, described in 1728, for the treatment of certain forms of blindness by the production of an “artificial pupil.”

Laqueur's case continued of this character for six years, under the use of miotics, and then was cured by iridectomy, the cure remaining permanent with normal vision until his death after 30 years.

Berncastle mentions a case of extraction of double cataract and double iridectomy for occluded pupils, which, after thirty years of blindness, resulted in the recovery of good sight.

After iridectomy the attacks ceased, leaving no pathological cupping of the disc, full vision, and a good field.