Michael Bisping effectively “lost” the vision in his right eye after suffering a serious detached retina that began with damage sustained in his fights, most notably a head‑kick knockout by Vitor Belfort in 2013, and then worsened over time despite surgeries. He later had the damaged eye removed and replaced with a prosthetic, which is why it now has a noticeably different appearance.

What Actually Happened

  • Bisping’s right eye problems trace back to cumulative trauma in his career, with the key turning point being Vitor Belfort’s high kick and follow‑up punches at UFC on FX: Belfort vs. Bisping in January 2013.
  • That fight left him with a detached retina in the right eye, an injury that was not immediately diagnosed and worsened over several months.

How He “Lost” His Eye

  • The detached retina and delayed treatment led to severe, permanent vision loss, eventually leaving him functionally blind in the right eye even after multiple surgeries.
  • To deal with the cosmetic and medical issues, he later had the damaged eye replaced with a prosthetic, which is why people often say he “lost his eye,” even though the original damage was from fight‑related trauma, not an accident outside the cage.