Sorry if this is wrong forum to post this in, but I thought I might as well post my question as my introduction...
So I must be fairly stupid, but I purchased one of these for purposes outside of hunting, or photography. An Ilauke 5W 850nm IR flashlight https://www.amazon.com/ilauke-Zoomable-Infrared-Flashlight-Hunting/dp/B01DDU0ILY/
For some reason I thought the thing would output some visible light when powered on, and thought I had a faulty device. So I unwittingly ended up looking directly at the IR diodes with my naked eyes...several times, for several seconds each time.
Let's say to give a generous overestimate, I looked directly at the LEDS when powered on 3 times, for ~6 seconds each time. at 1-1.5 feet away. I didn't notice any ill effects afterwards, but I'm assuming this is unhealthy in hindsight?
It's worth noting that while the device is advertised at 5W a reviewer says it's only 1.5W running on a standard AA battery. So in effect it would be a 1.5W 850nm IR LED flashlight.
What kind of damage does stuff like this do, if it is not immediately impairing, what ill effects can one expect?