clear is viral.
yellow is bacterial or allergic.

my DD has it at teh moment, she is on eye drops. if her eyes swell or get relaly sore or become closed from teh amount of gunk then straight to the docs.

DD's eyes are so puffy and read and its gone into her nose and now she cant breath through her nose at the moment great fun when trying to sleep.

hope she gets better soon
but regular salty water baths for her eyes and use clean tissues or cotton balls not a towel or washer.