Dry Eye Syndrome

Please help me. I am a 51 year old woman who has been diagnosed with Dry Eye by an ophthalmologist.

I have been on three different Antibiotic eye drops: Zylet, Azasite (which made my eyes red, and I had to discontinue) and lastly Lotemax, which seemed to be working very well.

I have been off the Lotemax for three days now and the symptoms are recurring. I also was following a routine washing with Cetaphil gentle cleanser morning and night, and using heat on my eyelids twice a day, and using the eyedrops per directions, three times a day.

Any suggestions/cures? Thanks!
-Liz