Pupil-block glaucoma in homocystinuria.

Pupil-block glaucoma in homocystinuria.

HOMOCYSTINURIA is an inborn error of metabolism due to deficiency of the enzyme cystathionine synthetase. This results in an increased excretion of homocystine in the urine and raised homocystine and methionine levels in the blood and cerebrospinal fluid. Clinically there is a picture of ectopia lentis, due to zonular degeneration, skeletal changes, fine fair hair, shuffling gait, mental retard...

Acute aphakic pupil block glaucoma: an alternative surgical approach.

In a series of 7 cases of acute aphakic pupil block glaucoma a surgical approach designed to break adhesions between the iris and the anterior hyaloid face was uniformly successful. Reasons for the success of the method are discussed and comparisons made with other surgical approaches.

Angle-closure, pupil dilatation, and pupil block.

PREVious papers (Lowe, 1964a) have remarked that when the pupils of eyes with shallow anterior chambers, narrow angles, and open peripheral iridectomies are dilated with homatropine, a considerable proportion of the eyes with persistently narrow angles develop angle-closure, a consequent fall in outflow facility, and a rise in intra-ocular pressure that may reach the fifties within two hours. W...

Mechanics of pupil block.

PUPIL block is widely regarded as one ofthe factors in the initiation of closed-angle glaucoma (Barkan 1953, 1954; Chandler 1952, 1955). Whilst the occurrence of pupil block is an established fact, statements as to its mechanism are uniformly vague; e.g. both Barkan and Chandler consider it to be produced by contact between the iris and lens, Sugar (1964) states that the posteriorly directed ve...

Stellate ganglion block in glaucoma.