I am writing in response to the article “Laser pointers fun, not too dangerous” published in the Daily on Jan. 27.

The article inaccurately stated that laser pointers could not cause damage to the eye.

In fact, there have been warnings issued by the FDA’s Center for Devices and Radiological Health and the American Optometric Association.

They warn that even momentary exposure from a laser pointer can cause discomfort and temporary visual impairment, such as glare, flashblindness and afterimages, without causing permanent damage. Prolonged exposure to a laser pointer, however, can cause permanent damage to the eye.

According to the FDA, “the light energy that laser pointers can aim into the eye can be more damaging than staring directly into the sun.”

It is true that the laser pointers you buy at local department stores do not pose a danger to the skin.

Some research lasers used on campus could cause severe burns if skin is exposed to the direct beam.

Because of the severe hazards associated with these types of lasers, special precautions, controls and training are required before they can be operated on campus.

Although sale and use of laser pointers are not regulated, it does not necessarily mean that they are totally safe.

When used properly, the risk of eye injury from an appropriately labeled laser pointer is extremely low.

However, some imported laser pointers have a greater power than is allowed and are not appropriately labeled.

Even momentary exposure to one of these lasers can result in permanent eye damage.

The following “common sense” safety rules are recommended for laser pointer users:

1) Never, NEVER stare into a laser pointer.

2) Never point a laser pointer at anybody. Laser pointers should only be used to point out or emphasize inanimate objects.

3) Avoid shining the laser pointer at “mirror like” targets. It could be difficult to judge the beam path, which could result in an accidental eye exposure.

4) Remember that laser pointers are not toys and should not be used by minors unless supervised by an adult.

There has been great concern recently about the use of laser pointers by minors.

In fact, the day the Daily published the article indicating that laser pointers are “toys” and are “not too dangerous,” the Associated Press reported that many cities have passed laws restricting the access to laser pointers by minors.

This is the result of misuse of the laser pointers, such as zapping motorists with a laser pointer.

If you have any questions about laser pointers or laser use on campus, please contact environmental health and safety at 294-5359.

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Ken Kerns

ISU Radiation Safety Officer