Multiple choice

most eyewear has an optical density level of __ for visible & infrared wavelenghts of light

  1. 2 to 4

  2. 8 to 10

  3. 10 to 14

  4. 4 to 8

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Optical density (OD) is a measure of the attenuation of light through a filter. For most laser safety eyewear used in clinical settings, an OD of 4 to 8 is standard to provide adequate protection against visible and infrared wavelengths.