This has been frequently found in horses as a sequel of iritis, and
permanent adhesion of the contracted iris to the front of the lens
capsule. It is in short, a posterior synechia with closure of the pupil.
The lens and its capsule are usually opaque so that there would be no
gain in detachment of the iris. If, however, there is reason to conclude
that any part of the lens is still transparent, the performance of
iridectomy over this portion, would produce a new aperture for the
entrance of light.