1.
to catch one's eye, to stand out, to be noticeable
Something draws attention, either because it is prominent or because it keeps happening. Can be positive (something eye-catching) or negative (something annoyingly conspicuous).
Usage
Often used when something catches one's attention spontaneously. When the subject is negative (bad behavior, mistakes, problems), the expression implies annoyance at how conspicuous it is. When the subject is neutral or positive, it simply means something stands out visually.