Just FYI, certain wavelengths of IR light can certainly damage eyes:
The use of furnaces, powerful heating and drying processes and high powered LED's which use IR can result in cataracts developing and flash burns to the cornea - these are the main biological effects of IR-A radiation due to temperature rise in the tissue. But IR-A radiation wavelengths are close to the visible light wavelengths and are transmitted to a small extent to the retina; permanent retinal damage can occur if the source is high powered (produces heat) and the exposure is prolonged. As wavelengths increase into the IR-B and IR-C regions the radiation is no longer transmitted to the retina but corneal flash burn injuries can still be caused.
(https://warwick.ac.uk/services/heal...ance/non-ionisingradiation/infraredradiation/)
Far Infrared (1400 nm - 1 mm)
Most of the radiation is transmitted to the cornea.
Overexposure to these wavelengths will cause corneal burns.
(https://ehs.oregonstate.edu/laser/training/laser-biological-hazards-eyes)
(https://warwick.ac.uk/services/heal...ance/non-ionisingradiation/infraredradiation/)
Far Infrared (1400 nm - 1 mm)
Most of the radiation is transmitted to the cornea.
Overexposure to these wavelengths will cause corneal burns.
(https://ehs.oregonstate.edu/laser/training/laser-biological-hazards-eyes)
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