You shouldn't really use acids in the eye area.
You could try adding a copper peptide to your Retin-A regimen. In the winter, I mix CP with Retin-A before applying. The CP helps build collegen and really helps reduce the flaking from Retin-A. I'm not sure it helps much with fine lines, although there are some studies that say it does.
I use Super CP Serum from Dr. Pickart's Skin Biology, but there are others:
Copper Peptides by Loren Pickart, PHD