Can you blind someone with a LED flashlight?

While it is possible to cause temporary vision impairment with a bright LED flashlight, causing permanent blindness is highly unlikely. The human eye has natural protective mechanisms, including the pupil's ability to constrict and the blinking reflex, which help protect the retina from excessive light exposure.

However, shining a bright LED flashlight directly into someone's eyes for a prolonged period can cause discomfort, temporary visual impairment, and potentially damage to the retina in rare cases. It's important to avoid intentionally shining bright lights directly into people's eyes to prevent any harm or discomfort.