Department of Emergency Medicine, University of Cincinnati, Cincinnati, Ohio, USA.
Urgent Clinic, Cincinnati Eye Institute, Cincinnati, Ohio, USA.
Emerg Med J. 2019 Mar;36(3):159-162. doi: 10.1136/emermed-2018-208235. Epub 2019 Jan 10.
The Wood's lamp, a handheld instrument that uses long-wave ultraviolet (UV) light with magnification of 2-3 times, is commonly used by non-ophthalmologists for examining patients with eye complaints. The goal of current research was to determine the sensitivity and specificity of the Wood's lamp for common eye abnormalities.
We examined a convenience sample of patients, 18 years of age and older, who presented for eye complaints to an urgent clinic of a large ophthalmology practice. This prospective observational trial was performed from December 2016 until July 2017. An ophthalmologist examined the patient's eyes with a Wood's lamp, followed by examination of the eyes using a slit lamp. The Wood's lamp was compared with the slit lamp, which served as the gold standard.
There were 73 patients recruited. The mean age of study subjects (29 female and 44 male) was 49 years. The overall sensitivity of the Wood's lamp was 52% (38/73; 95% CI 40% to 64%). Based on the principal final diagnosis made with the slit lamp, the Wood's lamp only detected 9 of 16 corneal abrasions, 5 of 10 corneal ulcers, 5 of 9 corneal foreign bodies, 0 of 4 cases of non-herpetic keratitis, 1 of 2 cases of herpes keratitis, 1 of 5 rust rings and 18 of 28 other diagnoses.
Examination using the Wood's lamp fails to detect many common eye abnormalities. Our findings support the need for a slit lamp examination of patients with eye complaints whenever possible.
伍德灯是一种手持式仪器，使用长波紫外线（UV）光并具有 2-3 倍的放大倍数，常被非眼科医生用于检查有眼部主诉的患者。目前的研究目的是确定伍德灯对常见眼部异常的敏感性和特异性。
我们检查了一个便利样本的患者，年龄在 18 岁及以上，因眼部主诉到一家大型眼科诊所的急诊就诊。这项前瞻性观察性试验于 2016 年 12 月至 2017 年 7 月进行。一名眼科医生用伍德灯检查患者的眼睛，然后用裂隙灯检查眼睛。将伍德灯与作为金标准的裂隙灯进行比较。
共招募了 73 名患者。研究对象的平均年龄（29 名女性和 44 名男性）为 49 岁。伍德灯的总体敏感性为 52%（38/73；95%置信区间 40%至 64%）。根据裂隙灯的主要最终诊断，伍德灯仅检测到 16 例角膜擦伤中的 9 例、10 例角膜溃疡中的 5 例、9 例角膜异物中的 5 例、4 例非疱疹性角膜炎中的 0 例、2 例疱疹性角膜炎中的 1 例、5 例锈环中的 1 例和 28 例其他诊断中的 18 例。
使用伍德灯检查无法检测到许多常见的眼部异常。我们的发现支持在可能的情况下对有眼部主诉的患者进行裂隙灯检查的必要性。
