What does the damage to the eye from lasers depend on?

The damage to the eye from lasers primarily depends on the power and wavelength of the beam. Power refers to the energy output of the laser, with higher power levels leading to a greater potential for damage. The wavelength is crucial because different wavelengths are absorbed differently by the various tissues of the eye. For example, shorter wavelengths (such as ultraviolet and blue light) are more readily absorbed by the cornea and can cause surface damage, while longer wavelengths (such as infrared) can penetrate deeper into the eye, leading to more severe retinal damage.

Understanding the relationship between power and wavelength is essential for assessing the risk associated with laser exposure, as they directly correlate to the severity of any potential injury. Factors such as the beam's intensity and specific characteristics of the laser light play a vital role in determining the extent of eye injury.

Other options, though relevant to different contexts in the study of light and health, do not directly characterize the primary factors determining eye damage from laser exposure.