Even though a laser's near-infrared light is invisible to humans, a beam entering the eye is still focused on the retina and can cause permanent damage.
(a beam; entering; the eye) (a beam entering the eye; is focused; on the retina; T:still) (a beam entering the eye; can cause; permanent damage)
a beam a beam entering the eye a beam entering the eye
entering is focused can cause
the eye
on the retina T:still
permanent damage