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Bacterial-sized particle inflow through sutured clear corneal incisions in a laboratory human model.

Abstract：

PURPOSE:To determine the effectiveness of a single radial suture placement in 2 clear corneal incision (CCI) configurations in preventing inflow of bacterial-sized particles. SETTING:Wilmer Eye Institute, Baltimore, Maryland, USA. DESIGN:Experimental study. METHODS:Ten human globes were used. Two 25-gauge needles connected to a saline solution bag and to a digital manometer were inserted through the limbus 120 degrees apart. Four incision-suture combinations were evaluated sequentially in each cornea. All incisions had the same dimensions (2.75 mm width, 3.00 mm length). Two incisions were single plane, and 2 were biplane. One incision from each configuration was left unsutured, and the other was sutured (10-0 nylon). With a preset 10 mm Hg intraocular pressure (IOP), India ink was applied to the incision site and a sudden IOP fluctuation was induced. Inflow was outlined and measured by planimetry. RESULTS:There was a significant increase in area and linear distance of India-ink inflow after pressure challenge in all groups (P < .05), but with important differences among them. When the sutured and unsutured groups from each CCI were compared, there was a significantly smaller area of inflow in the 2-step unsutured group (P < .05). The linear inflow was higher in both sutured groups; however, the difference was significant for the 2-step incision configuration only (P < .05). CONCLUSIONS:A single radial suture reduced the area of inflow of bacterial-sized particles but increased the linear distance of inflow in single-plane 3.0 mm incisions. Suture placement in a stepped incision increased inflow of bacterial-sized particles. FINANCIAL DISCLOSURE:No author has a financial or proprietary interest in any material or method mentioned.

journal_name

J Cataract Refract Surg

journal_title

Journal of cataract and refractive surgery

authors

May WN,Castro-Combs J,Kashiwabuchi RT,Hertzog H,Tattiyakul W,Kahn YA,Hirai F,Gower EW,Behrens A

doi

10.1016/j.jcrs.2010.11.042

subject

Has Abstract

pub_date

2011-06-01 00:00:00

pages

1140-6

issue

eissn

0886-3350

issn

1873-4502

pii

S0886-3350(11)00447-0

journal_volume

pub_type

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Bacterial-sized particle inflow through sutured clear corneal incisions in a laboratory human model.