It's fully capable of starting fires if you point it at the wrong thing, and would permanently wreck unprotected eyes (note his MASSIVE WELDING MASK) in no time flat.
Hawksbills close their unprotected eyes when they feed on these cnidarians.
Snow blindness (also known as ultraviolet keratitis, photokeratitis or niphablepsia) is a painful eye condition, caused by exposure of unprotected eyes to the ultraviolet (UV) rays in bright sunlight reflected from snow or ice.
(Note that when unprotected eyes and skin are exposed to artificial UV-A of high intensity, the recommended Tmax values of the manufacturers, usually between 5 and 30 minutes, must not be exceeded.
Arc flash is bright enough to burn the retina of your eyes, even through your eyelids, so never look directly at the arc with unprotected eyes.
Remove the copper from the solution and examine it for color changes, taking care not to hold it near or above unprotected eyes.
It's also important to keep safety glasses on when cutting, polishing, or grinding with a Dremel, since shards of wood, metal, plastic or glass could do serious damage to unprotected eyes.
8 9 10 Hyperglycaemia may assert its main effect by impairing autoregulation of retinal perfusion, thereby leaving the eye unprotected from systemic hypertension.
Jim's eyes, unprotected by the hat, were now blasted by the rodeo's bright lights, and he fell to the ground.
Do not look directly at the sun with the naked eye or unprotected binoculars or telescopes; you risk permanently blinding yourself.
Phototherapy, although generally considered safe, may result in retinal damage (when eyes are unprotected from phototherapylight), skin pathology, and an increased insensible water loss [ 9].
