Changes in the Clinical Manifestations of Ocular Injuries Induced by Power Lawn Mowers.

Kang, Yeon Soo; Lee, Jun Sung; Ji, Yong Sok

doi:2016.57.3.492

J Korean Ophthalmol Soc > Volume 57(3); 2016 > Article

Original Article

Journal of the Korean Ophthalmological Society 2016;57(3):492-498.
DOI: https://doi.org/10.3341/jkos.2016.57.3.492 Published online March 15, 2016.

Changes in the Clinical Manifestations of Ocular Injuries Induced by Power Lawn Mowers.

Yeon Soo Kang, Jun Sung Lee, Yong Sok Ji

Department of Ophthalmology, Chonnam National University Medical School, Gwangju, Korea. redvein@naver.com

예초기에 의한 안외상 환자의 시대에 따른 임상양상의 변화

강연수⋅이준성⋅지영석

전남대학교 의과대학 안과학교실

Abstract

PURPOSE
To investigate changes in the clinical manifestations of ocular injuries induced by power lawn mowers. METHODS: In a retrospective study of 172 patients with ocular injuries induced by power lawn mowers in 2006, 2010, and 2014. Best corrected visual acuity (BCVA) at the time of presentation and 6 months after trauma, age, sex and seasonal distribution were analyzed. We assessed the degree of injury using slit lamp biomicroscopy, fundus examination, and computed tomography and analyzed the prognoses according to open/closed injury and, anterior/posterior segment injury. All patients underwent medical or surgical treatment, and the factors affecting final BCVA were analyzed. RESULTS: The ratio of closed injuries increased significantly (p = 0.027), as did the ratio of corneal erosion (p = 0.020), and, the ratio of corneal laceration decreased significantly (p = 0.014) over time. In the multivariate analysis, initial BCVA was the only risk factor of poor visual outcome in both open and closed injuries. CONCLUSIONS: The proportion of open globe injury has decreased over time. In contrast, the proportion of simple injuries such as corneal erosion has increased in ocular injuries induced by power lawn mowers. Lower initial visual acuity was the only risk factor of poor visual outcome in both open and closed injuries.

Key Words: Closed globe injury;Ocular injury;Open globe injury;Power lawn mower;Visual outcome