What are the two critical organs susceptible to damage from lasers?

• A. Eyes and Skin
• B. Ears and Nose
• C. Lungs and Heart
• D. Hands and Feet

Answer: (A)

Lasers deliver concentrated energy that can injure tissue they directly strike, and two tissues are especially vulnerable: the eyes and the skin. The eyes are uniquely at risk because the eye’s optics focus incoming light onto the retina, turning a small, intense beam into a highly concentrated retinal dose. This can cause permanent vision loss even after a brief exposure, and the retina itself doesn’t have pain receptors to warn you that damage is happening. Different wavelengths affect parts of the eye in different ways: UV light tends to damage the outer surfaces like the cornea and lens, while visible and near-infrared light can burn retinal tissue.

The skin is also prone to laser damage because the energy can be absorbed and converted into heat, producing burns or photochemical injury. High-power or pulsed lasers can cause immediate skin burns, and even lower-power beams can cause damage with enough exposure time.

Other areas like the ears, lungs, or internal organs aren’t the primary targets for typical laser exposure, so the eyes and skin are the standout organs to protect with appropriate safety measures and protective equipment.