Hi and welcome to YT!
Is your kiddo a pup? If so, they may tear more as pups bc of teething. You want to look out for greenish discharge or if it's overly smelly, as this can indicate an eye infection...for that, you'd need a vet.
When my kiddos have hard crusties, I turn on the warm water and run a small soft toothbrush under the water - I then dip it in the water and comb it over the area, getting more water as I go, and eventually all the goo comes off softly and without pulling.