What factor is increased when applying correction factors for the IR-A band?

The increase in the Maximum Permissible Exposure (MPE) for pre-retinal absorption in the 1150-1400 nm range is associated with applying correction factors for the IR-A band because this specific range of infrared wavelengths is critical for assessing potential hazards related to laser exposure, particularly in terms of thermal effects on the eye.

In the context of laser safety, the IR-A band is understood to have a significant potential for causing damage because light in this range can penetrate the eye and reach the retina, which can lead to thermal effects. When applying correction factors, which account for the biological effectiveness of laser radiation, the MPE values are adjusted to ensure they adequately reflect the potential for retinal exposure and damage.

Consequently, when determining safety thresholds specifically for this infrared range, the MPE is adjusted to account for the unique absorption characteristics of infrared light in relation to its effects on the ocular structures. This necessitates an increased MPE to ensure that exposure limits adequately safeguard against potential injury from lasers operating in this band.

The other choices do not encompass this specific adjustment related to the pre-retinal absorption in the indicated range. For instance, the repetitive-pulse exposures and small-source calculations might involve different parameters or focus on other wavelengths