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Related Experiment Videos

The potential hazard of laser pointers.

H Moseley1, F M Tulley, C N J McGhee

  • 1The Photobiology Unit, University of Dundee, Ninewells Hospital & Medical School, Dundee DD1 9SY, Scotland. H.Moseley@dundee.ac.uk

Lasers in Medical Science
|March 11, 2003
PubMed
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Most laser pointers seized by Scottish police are Class 3B, potentially hazardous if viewed directly. Prolonged exposure can cause permanent retinal injury and serious dazzle effects.

Area of Science:

  • Ophthalmology
  • Laser Safety
  • Forensic Science

Background:

  • Laser pointers are common devices with varying power outputs.
  • Concerns exist regarding the potential hazards of high-powered laser pointers.
  • Police seizures provide a sample of devices in circulation.

Purpose of the Study:

  • To analyze the power classification of laser pointers confiscated by police.
  • To assess the potential risks associated with these devices.
  • To inform safety guidelines and public awareness.

Main Methods:

  • Examination of 30 confiscated laser pointers.
  • Measurement of radiated power.
  • Classification according to European standards (e.g., Class 3B).

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Main Results:

  • 28 out of 30 laser pointers were Class 3B.
  • Radiated power levels were up to 9.3 mW.
  • Direct viewing poses a potential hazard.

Conclusions:

  • Class 3B laser pointers are prevalent in confiscated devices.
  • Prolonged direct exposure can lead to permanent retinal injury.
  • Potential for serious consequences due to dazzle effects exists.