No abstract

SUMMARY Sixty-one patients with ocular hypertension (1 17 eyes) were followed up for I to 11 years (average 40 7 months). Ten

Forty-four eyes in 25 black patients are compared with 92 eyes of 47 white patients in a population with ocular hypertension followed up for 1 to 12 years in a glaucoma clinic. The black patients present at a younger age than the whites and their mean initial intraocular pressure is significantly higher. The fact that more black ocular hypertensives developed glaucoma-8 eyes (I81 %) in the black population as compared with 5 eyes (5-4%) in the white population-is attributed to these two differences.

Troutman, 1973). We have designed a study to measure this and the factors that influence it. A previous study (Luntz and Livingston, 1976) showed that the type of suture material and/or suturing technique does not significantly influence the final postoperative astigmatism. This study and other studies of post-cataract astigmatism do not include a corneal section with a continuous nylon suture and do not measure 'suture-induced' astigmatism.We have investigated the effect of a continuous nylon suture in a corneal section on the final postoperative astigmatism (after removal of sutures and normalisation of suture-induced astigmatism) and whether this is influenced by the level of sutureinduced astigmatism. Subjects and methodsWe report a prospective study in 40 eyes of 32 patients. This number comprises all cataract patients operated on by one of us during 1975 (M.H.L.) in whom a corneal section was closed by a continuous 10/0 monofilament nylon suture (Ethilon) in a running shoe-string configuration as 360 on 11 May 2018 by guest. Protected by copyright.