We've all been there: that moment when you stretch and yawn in the morning to find a little bit of crust in your eyes. This is totally common, but what exactly causes it? It's all down to those tiny {tears{, or more https://fraserbotx557273.wikilentillas.com/264181/that_gooey_stuff_in_your_eyes_eye_crust_what_s_going_on