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  • Title: Keratitis solaris and sunbeds.
    Author: Daxecker F, Blumthaler M, Ambach W.
    Journal: Ophthalmologica; 1995; 209(6):329-30. PubMed ID: 8751341.
    Abstract:
    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.
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