What chromophores are absorbed by laser light?

The correct choice is that laser light is absorbed by various chromophores, including water, oxyhemoglobin, melanin, and ink. Chromophores are molecules or parts of molecules that absorb light at specific wavelengths, and their interactions with laser light are fundamental in various laser applications in medicine and aesthetics.

Water is a primary chromophore in many biological tissues; its absorption characteristics can influence the effectiveness of laser treatments related to skin and deeper tissues. Oxyhemoglobin is another significant chromophore because it is responsible for the absorption of light in vascular structures, playing a critical role in laser therapies that target blood vessels or treat conditions like rosacea. Melanin absorbs light across a range of wavelengths, making it relevant in laser treatments for pigmentation disorders or hair removal. Ink, while not a naturally occurring chromophore in the human body, can also absorb laser light in tattoo removal procedures, as the pigments in tattoo ink are designed to capture and retain light.

Therefore, since all of these substances absorb laser light, the conclusion that all of them are included under the umbrella of chromophores for laser absorption is correct.