The human eye is particularly vulnerable to damage, both from physical injuries and certain wavelengths of electromagnetic radiation. Before 1960, when the first laser was created, exposure to artificial radiation like welding flash diminished rapidly as you moved away from the source. Additionally, light within the visible spectrum was generally not hazardous. However, the advent of lasers, especially high-powered versions, changed this, as they can now inflict significant damage even over long distances. The coherent, focused light of lasers means that even visible light can be harmful if delivered with enough power.
What makes lasers even more dangerous today is their widespread availability. No longer confined to research labs as they were in the 1960s, lasers are now easily accessible to consumers for recreational use as well as industrial applications. This has resulted in numerous laser-related accidents affecting a broad range of people, particularly those who use lasers without adequate precautions. Below are two key consumer laser risks:
RISKS FROM INEXPENSIVE GREEN LASER POINTERS
One common consumer device is the 5 mW green laser pointer, which falls under the Class 3R category. While direct eye exposure should be avoided, the risk of injury is low for individuals with a normal blink reflex—provided the laser is manufactured to specification. Unfortunately, many laser pointers sold online, especially from questionable sources, may pose significant hazards.
Green laser pointers work by generating an infrared beam, which is then converted into visible green light. During this process, some infrared light remains and is typically blocked by an infrared filter. However, cheaper green laser pointers often lack effective infrared filters, either due to design flaws, manufacturing shortcuts, or poor quality control. This can lead to the emission of much higher levels of infrared light, which is invisible to the human eye and places users at risk of unknowingly exposing themselves to dangerous radiation. A faulty or missing filter can make a laser pointer far exceed its Class 3R rating, multiplying the risk of injury.
MISUSE OF HANDHELD LASERS
Handheld lasers, ranging from 25 mW to 1000 mW, are classified as Class 3B (avoid beam exposure) and Class 4 (avoid both direct and scattered radiation to eyes and skin). These powerful devices, sometimes reaching up to 3500 mW, are available to consumers online. Lasers of this power are capable of igniting fires in combustible materials, and in the hands of untrained individuals, the risk of accidents increases dramatically. For instance, some users casually engage in activities like targeting balloons for practice, unaware of the potential dangers.
Accidents often occur when laser beams reflect off metallic, glass, or crystalline surfaces, scattering the light back into the user’s eyes. In some cases, people have been injured by shining laser beams into mirrors. Tragically, many of these incidents involve children or teenagers, who may treat these devices as harmless toys. Any laser powerful enough to pop balloons or start fires can cause immediate and irreversible eye injuries if it strikes the eye directly.
Another issue is that high-powered handheld lasers are sometimes misleadingly advertised as laser pointers. People may use them inappropriately, such as for presentations in crowded spaces, potentially exposing large groups to accidental laser radiation.
LASER SAFETY TIPS
To help prevent potential injuries when using lasers, it’s essential to follow a set of important safety precautions. These guidelines are designed to minimize the risks associated with laser exposure and ensure the safe handling of these powerful devices. Whether you’re using a laser for recreational, industrial, or presentation purposes, adhering to these safety measures can significantly reduce the chance of accidents or harm to yourself and others.
Wear certified laser safety glasses
Always wear certified glasses designed for your specific laser type, and make sure others around you are protected as well. Consult a reputable source to ensure you have the correct protection, as using the wrong glasses can still result in injury.
Handle lasers with care
Like any dangerous tool, never point a laser at people, animals, or reflective surfaces. The beam can easily redirect, causing unintended harm.
Store lasers securely
Keep your lasers in a safe, child-proof location, with batteries stored separately. This reduces the chance of accidental use, especially by children or unauthorized users.
Avoid direct exposure
Never look directly into the laser beam, even if it appears non-functional. Some beams are invisible but still harmful. Always handle laser malfunctions cautiously.
Supervise use
Lasers are not toys. Avoid letting children handle them, even under supervision, as curiosity can lead to unsupervised use later.
Avoid optical instruments
Never look at a laser beam through devices like binoculars or telescopes, as this can amplify the beam and increase the risk of injury.
Be cautious around volatile materials
Lasers should never be used around flammable substances like gasoline or solvents, as they could ignite dangerous fires.
Understand laser specifications
Don’t base your decisions solely on labels. Ensure you understand the power level and intended use of the laser. A device capable of burning materials is far too strong for casual applications like presentations.
By adhering to these safety precautions, you can significantly mitigate the risk of laser-related injuries. For enhanced protection, we encourage you to explore our Phillips Safety collection of laser safety glasses, which are specifically designed to offer superior defense against various types of laser exposure. Our range includes options suited for different applications and power levels. Should you have any questions or require assistance in choosing the most suitable safety glasses for your needs, please don’t hesitate to reach out to us. Our experts are here to provide personalized guidance and ensure you have the right equipment to stay safe.