Daxecker F, Blumthaler M, Ambach W
University Clinic for Ophthalmology, University of Innsbruck, Austria.
Ophthalmologica. 1995;209(6):329-30. doi: 10.1159/000310652.
Keratitis solaris is caused by ultraviolet radiation in the range 200-320 nm. The threshold dose for keratitis solaris is 40 J/m2 for short-term exposure. We measured the emission spectra of 22 sunbeds in the range 250-500 nm with a high-resolution double monochromator and calculated the exposure times for the threshold dose of keratitis solaris. Depending on the type of lamp used, the exposure times ranged from 90 s to 3.5 h. Lamps with short exposure times for keratitis solaris can induce keratitis solaris if protective goggles are not used (e.g., to achieve a uniform tan of the eye area) and if the eyes are opened briefly several times, perhaps, to look at a watch. Generally, sunbed users have no way of ascertaining the lamp type or its emission spectrum and of determining the exposure time for the threshold dose of keratitis solaris.
日光性角膜炎是由波长在200 - 320纳米范围内的紫外线辐射引起的。短期暴露下，日光性角膜炎的阈剂量为40焦耳/平方米。我们使用高分辨率双单色仪测量了22个日光浴床在250 - 500纳米范围内的发射光谱，并计算了达到日光性角膜炎阈剂量的暴露时间。根据所使用灯的类型，暴露时间从90秒到3.5小时不等。如果不使用护目镜（例如，为了使眼部区域肤色均匀），并且眼睛短暂睁开几次（比如看手表），那么导致日光性角膜炎暴露时间短的灯可能会引发日光性角膜炎。一般来说，日光浴床使用者无法确定灯的类型或其发射光谱，也无法确定达到日光性角膜炎阈剂量的暴露时间。
