Going on to become an Ultimate Fighting Championship champion with one eye is a feat only Michael Bisping (30-9) has achieved and it wasn’t easy for the Brit in any aspect.
A perennially ranked middleweight contender, Bisping (30-9) took on Vitor Belfort in a title eliminator back in 2013. Bisping suffered a second round knockout loss that also left him with a retinal detachment and eventually loss of vision. The eye injury was not immediately detected and had worsened further by the time it was diagnosed.
It should be noted that Belfort is known to have been using testosterone replacement therapy until 2014, when the Nevada State Athletic Commission banned its approved use.