Tazorac (Retin-A) Caused Wrinkles Under my Eyes

My dermatologist prescribed Tazorac (Gold, 0.1%) for mild lines & undereye crepe'iness. I was told to use it once a week for a month, just under the eyes, & slowly progress down to once every 4 days (& more if it was tolerated). To be used at night & a good sunblock during the day. The cream has twice now caused, what seem to be, permanent wrinkles under my eyes. I'm devastated. She says this is not possible but the wrinkles are there & not going anywhere. I'm moisturising well. Any advice?