Department of Ophthalmology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
Eye (Lond). 2011 Dec;25(12):1622-6. doi: 10.1038/eye.2011.229. Epub 2011 Sep 16.
To identify the predictive factors for anatomical and visual outcomes in posterior segment intraocular foreign body (IOFB) patients managed by pars plana vitrectomy (PPV).
A retrospective chart review was performed for 77 patients, who had PPV for IOFBs removal between January 2001 and July 2007. Univariate and multivariate analyses were conducted to evaluate the predictive factors.
The mean age of the patients was 33.4 years. The nature of IOFBs was mainly metal, with injuries most commonly caused by an electric grass trimmer. The mean time interval between injury and IOFBs removal was 30.7 days. The mean preoperative visual acuity (VA) was 1.82 logarithm of the minimal angle of resolution (logMAR), and mean final was VA 1.10 logMAR. From multivariate analysis, good visual outcome was correlated with the corneoscleral entry site, and poor visual outcome was correlated with the presence of relative afferent pupillary defect.
In noncombat IOFBs, most cases were work-related. Delayed IOFBs removal was acceptable when primary wounds were repaired appropriately and extensive antibiotics administered. Even though advancement in vitreoretinal surgery can reduce the frequency of blindness, further promotion and education on eye protection during work are needed.
探讨经睫状体平坦部玻璃体切除术（PPV）治疗眼后段眼内异物（IOFB）患者的解剖和视力预后的预测因素。
对 2001 年 1 月至 2007 年 7 月间因 IOFB 接受 PPV 治疗的 77 例患者进行回顾性图表分析。进行单因素和多因素分析以评估预测因素。
患者的平均年龄为 33.4 岁。IOFB 的性质主要为金属，损伤最常见于电动草坪修剪器。受伤至 IOFB 取出的平均时间间隔为 30.7 天。平均术前视力（VA）为 1.82 最小分辨角对数视力（logMAR），平均最终 VA 为 1.10 logMAR。多因素分析显示，良好的视力预后与角巩膜入口部位有关，而相对传入性瞳孔障碍的存在与较差的视力预后相关。
在非战争性 IOFB 中，大多数病例与工作有关。只要适当修复初级伤口并给予广泛的抗生素治疗，延迟 IOFB 取出是可以接受的。尽管玻璃体视网膜手术的进步可以降低失明的频率，但仍需要进一步推广和教育工作中的眼部保护。
