My understanding is green is infection.  If it were yellow, I would think allergies, but I would still go to the vet with any thick discharge that isn't white or clear.  Any redness in the white of the eye, I would also see the vet.   
I stopped using sterile saline (even the preservative free) in Max's eyes because something in it always irritated his eyes and caused green goopy discharge/infection.     
I'm glad you are seeing the doctor.  Sending positive thoughts for Jax.     
				__________________  Kristin, Max and Teddy          |