Bacterial contamination of nylon corneal sutures

Abstract

We report the findings of a prospective study into the bacterial contamination of monofilament nylon sutures removed from corneal wounds following cataract surgery. Sutures were classified as tight, loose or broken at the time of removal. Loose and broken sutures showed significantly more bacterial contamination than tight sutures (p < 0.001, chi squared). Positive cultures were obtained from 2 (6.2%) of 32 tight sutures, 14 (38.9%) of 36 loose sutures and 11 (37.9%) of 29 broken sutures. Staphylococcus epidermidis was the most commonly isolated organism (isolated in pure growth from 22 (81.5%) of 27 positive cultures). These findings may explain the occasional association of biodegraded corneal monofilament nylon sutures and suppurative keratitis and highlight the potential risk of seeding a suture track infection at the time of suture removal. They also emphasise the need for prophylactic topical antibiotic when removing biodegraded sutures.

Managing iris prolapse

“…A suture can cause complications. 3,4 Sometimes careful hydration of the main incision is enough to close the incision. The key to hydration is to make sure the cannula tip is at the corneal stroma parallel to the main incision.…”

Microbiota aeróbia conjuntival nas conjuntivites adenovirais

“…Entre eles, a idade do indivíduo (9) , ceratoconjuntivite sicca (12) , uso de lentes de contato (13) , presença de ponto de sutura corneal (14) , estados que alterem as características normais do filme lacrimal (15) , alcoolismo e desnutrição (16) , e hospitalização prolongada (17) . É importante lembrar que protozoários e vírus não constituem a microbiota normal ocular.…”

Corneal cut closure using temperature-controlled CO2 laser soldering system

“…However, it is also time-consuming and requires great skill. In addition, sutures pose a risk of complications, including infection [1], induced astigmatism [2], erosion [3], foreign body sensation, irritation of the cornea and conjunctiva from exposed knots and corneal edema, neovascularization [4], and leakage [5]. Soldering techniques have been studied for more than 30 years [6,7] as an alternative to sutures for tissue bonding [8][9][10][11][12], including sclero-corneal and corneal cuts [13,14].…”