Laser-induced retinal injury following a recreational laser show: two case reports and a clinicopathological study.

K Boosten, R Van Ginderdeuren, W Spileers, I Stalmans, M Wirix, J Van Calster, R Stalmans, P Stalmans
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Abstract

Background: Two patients who attended a dance festival with an audience-scanning laser show presented in our department with a decrease in visual acuity from a direct laser hit in one eye. Ophthalmoscopy showed a similarly sized retinochoroidal coagulation spot, which had led to a retinal hemorrhage in both patients. Because the organizers of the show concluded that the retinal injury was caused by powerful, handheld laser pointers in the crowd, we were interested in determining if these laser pointers could cause this kind of acute retinopathy.

Methods: A 44-year-old man with an extrafoveal, temporal choroidal melanoma was scheduled for enucleation. The eye (visual acuity 20/20) had a healthy-appearing macula. Prior to enucleation, the retina was exposed to eight different durations (0.5-64 seconds) of laser beam from a commercially available, handheld, class 3B green laser pointer (500 mW).

Results: Histologic analysis was unable to identify any abnormalities in the choriocapillaris, the photoreceptors or the retinal pigment epithelium (RPE).

Conclusion: The use of powerful laser appliances (class 4 lasers) directed into the audience (audience-scanning laser show) can cause significant retinal injuries with lifelong visual consequences. It is unlikely that laser pointers, even those of class 3B, can cause these ocular injuries.

娱乐性激光表演后激光诱导的视网膜损伤:两例报告和临床病理研究。
背景:我科报告了两例参加有观众扫描激光表演的舞蹈节的患者,其中一只眼睛被激光直接击中视力下降。眼科检查显示一个大小相似的视网膜脉络膜凝块,这导致了两例患者的视网膜出血。因为展览的组织者得出结论,视网膜损伤是由人群中强大的手持激光笔引起的,我们对确定这些激光笔是否会导致这种急性视网膜病变很感兴趣。方法:一名44岁的男性与中央凹外,颞部脉络膜黑色素瘤被安排去核。眼睛(视力20/20)有一个看起来健康的黄斑。在去核之前,视网膜暴露在8种不同持续时间(0.5-64秒)的激光束下,激光束来自市售的手持式3B级绿色激光笔(500 mW)。结果:组织学分析未发现绒毛膜、光感受器或视网膜色素上皮(RPE)的异常。结论:使用强力激光器具(4级激光)直接照射观众(观众扫描激光表演)可造成严重的视网膜损伤,并造成终身视觉后果。即使是3B级的激光笔,也不太可能造成这些眼部损伤。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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