Welding is often involved in our life, it can generate very stimulating even harmful strong lights, especially when it flashes quickly. So this is absolutely dangerous to our eyes. However, most often the stobe light that we encounter is not welding light, but generated by cameras when we take photos. Compared to welding light, camera strobe is not so harmful, because its intensity is much less. But on the contrary, very often exposion into it, eyes also fell uncomfortable, or even painful, so this is when you have to avoid further effects. So, occasional using of camera strobe lights will not harm your eyes.
Do not forget to protect eyes from varied aspects, such as sit up straight, and keep necessary space between any screen.