Elastic polypropylene suture in cataract surgery: Long-term follow-up

Abstract

The final part of a prospective, controlled study of elastic polypropylene suture for cataract surgery was undertaken. The aim was to determine the change in induced astigmatism at 30 months after extracapsular cataract surgery and to assess the long-term safety of the suture material. Thirty-two of 44 patients were reexamined for changes in astigmatism. The results of all examinations were subjected to vector analysis. Both the elastic polypropylene group and the nylon control group continued to show an increase in the against-the-rule component of astigmatism. There was no statistical difference (p < 0.5) between the two groups at 30 months post-operatively, though the shift was greater in the polypropylene group. Wound security was similar for both groups but the polypropylene group had a higher incidence of giant papillary conjunctivitis (24%) due to exposed suture ends. The nylon suture was hydrolysed in 89% of that group and all patients were asymptomatic.

Comparing two tensioning suture sizes for 360° viscocanalostomy (canaloplasty): a randomised controlled trial

“…Suture 'cheese wiring' into the anterior chamber during and after surgery was not a frequent complication in canaloplasty, possibly resulting from the underestimated tensile strength of the TM. We did not find any difference in the frequency of cheesewiring between the 6-0 and 10-0 Prolene group, thereby indicating that neither the thickness nor the elasticity of Prolene sutures 36,37 may be relevant for this adverse event.…”

Attaining the optimal flange technique for trans-scleral capsular bag stabilization using iris hooks

“…For example, nylon may be labile to hydrolysis and therefore may become fragile or even dissolve over time, particularly when used behind the iris. 12,13 A few studies reported on the longterm usage of nylon in the eye: for instance, although Mehta did not observe any nylon loop degradation in 418 intracapsular cataract extractions, biodegradation was found in 14 of 34 second-stage iris clips or iridocapsular implants in children and young adults. There were no side effects of biodegradation except 2 cases of glaucoma, and in 1 of these 2 cases, birefringent particles were found in the trabecular tissue.…”

Beyond the Necessary God: Trinitarian Faith and Philosophy in the Thought of Eberhard Jüngel By Paul J. DeHart: Atlanta, Scholars Press, 1999. 195 pp. $19.95

“…Suture 'cheese-wiring' into the anterior chamber during and after surgery was, contrary to our expectations, not encountered even in the first cases in this series. This could be due to underestimating the resistance of the inner wall of the SC to tension, or alternatively, to the relative elasticity of the polypropylene suture, 36 or to possible relaxation of the suture knot. Early postoperative complications were mainly related to transient hyphaema, which represents refluxed blood from the venous system through the widely open canal and highly permeable TM.…”