Swollen and itchy causes me to wonder if you have allergies. Did you see an ophthalmologist and did they determine the reason for your symptoms? Allergies effects on the eyes might be treated specifically. Otherwise, there are prescription meds for dry eye, as well as plasma drops, punctual plugs, Lipoflow, etc. An ophthalmologist should be able to offer all the options. I actually received acupuncture that was my biggest help. My problem is chronic, so I do warm compresses, nightly Systane ointment and Systane Hydration PF drops in the day. My ophthalmologist recommends everything preservative free. I also have punctual plugs that help me.