Those eyedrops probably won't help in this case. You need to visit a reptile vet with your chameleon. She already has a periorbital edema and the bulbus seems to be sunken in. Your vet can flush the eye, get a swab and take a blood sample to find the reason for this issue. It might be an eye infection, but it could even be a foreign body inside, an ascending infection from oral cavity or something else.
By the way, what's going on with her lower jaw? Does she often keep her mouth a little open and a little shifted to left side like this?