What is intrabeam viewing?

• A. Looking directly at a laser
• B. Viewing a laser through glass
• C. Observing the reflected beam
• D. Checking the laser power meter

Answer: (A)

Intrabeam viewing is looking directly into the laser beam along its path. This is especially dangerous because the beam concentrates a lot of energy at the eye, which can cause serious injury or damage even with brief exposure. That makes the description of looking directly at the laser the best fit. Viewing through glass usually reduces or alters the beam but doesn’t capture the act of looking straight into the beam itself. Observing the reflected beam is viewing a beam after it has interacted with something, which is not intrabeam viewing. Checking the laser power meter is an instrument task, not viewing the beam. In practice, intrabeam viewing is avoided or requires strict safety measures, such as appropriate protective equipment, because of the high risk of eye injury.