https://ehs.lbl.gov/resource/documents/radiation-protection/non-ionizing-radiation/light-and-infrared-radiation/#:~:text=Prolonged%20exposure%20to%20IR%20radiat

https://ehs.lbl.gov/resource/documents/radiation-protection/non-ionizing-radiation/light-and-infrared-radiation/#:~:text=Prolonged%20exposure%20to%20IR%20radiation,the%20damage%20to%20the%20retina https://ehs.lbl.gov/resource/documents/radiation-protection/.... My understanding is that typically it isn't an issue, but the hearer malfunctioned, and it was on his desk, and so he was kind of staring at it all day. I'd take care. Don't stare into the light, for starters.