26th November 2019


Can a laser pointer hurt your eyes?

While it is unlikely most lasers used in toys, games, and laser pointers can permanently damage your eyes, it is theoretically possible so caution should be exercised. However, split second exposure from type II or IIIA laser pointers will not result in any permanent damage.

Moreover, what are the symptoms of laser eye damage?

Laser exposures can have a wide range of effects including flash blindness, dazzle, dark spots, hazy vision, floaters, burns, retinal bleeding, etc. Of special interest are the hazards posed by visible lasers from glare and flash blindness, and from very high energy lasers that could cause serious thermal injuries.

How does laser affect the eyes?

For visible light exposures such as from laser pointers or shows, the only part of the eye that can be damaged is the retina. A lesion or scotoma on the retina is rightfully termed a “laser eye injury” or “laser eye damage”. They arelaser exposure effects” or “post-exposure effects”.

Can a 5mW laser hurt your eyes?

At <5mW, a laser beam's energy density (W/cm2 or J/cm2) isn't sufficient to cause biological damage, and the eye is protected. Once you exceed the 5mW limit, however, the blink reflex no longer offers protection.
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