Pamela Des Barres -- 'Famous' Groupie Sues Over Cosmetic Nightmare

Infamous rock 'n roll groupie Pamela Des Barres claims her eyes were badly burned during a cosmetic skin treatment ... and now she's suing the doctors who allegedly botched the procedure.

According to the suit filed by Pamela -- best known for bedding huge rockers like Mick Jagger and her book "I'm With the Band" ... she went to American Medical Aesthetics and Wellness in L.A. for a treatment in September, 2011.

In the docs, Pamela claims "defective and dangerous" products were applied to her face ... causing "burning and scarring" to her eyes and resulting in a loss of vision. Further, the suit claims doctors told Pamela to leave without helping her or seeking emergency assistance.

Pamela's attorney James Wohl tells us Pamela's corneas were burned by the procedure -- and she is still getting treatment from multiple opthamologists.

By the way, Pamela's storied rock star conquests partly inspired Kate Hudson's character in the movie "Almost Famous."