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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
Summary
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).
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.