Cat has a cloudy eye

I noticed this morning that our 6 month old male kittens inner eyelid was sticking and he seemed more tired than normal. I made a same day vet appt and was given "Neomycin and Polymyxin B Sulfates and Dexamethasone Opthalmic Ointment" to be applied twice daily for 7 days. I did the first application when we got home around 10am est. This evening I've noticed that his left eye is cloudy/glassy looking and sometimes his pupils are different sizes. I'm not sure what to make of this. Could it be the medication? I'm basically wondering if it's something I can wait to call on Monday about or if I should take him to an emergency vet clinic.

I tried to get pictures showing the cloudiness but it wouldn't really show up. In the 4th picture you can see the pupil size difference happening.