Former UFC champion BJ Penn has not announced his official retirement from MMA, but any type of return could stall because of an eye disease.

Penn, during a recent interview with his own personal website, stated that back in 2011, he started having difficulty with his vision. He was diagnosed with a cataract by doctors, and has been unable to fully regain his vision.

“People ask me all the time if I’m going to fight again, and I almost just want to change the subject because I definitely don’t want to fight with a cataract in my eye,” Penn said.

“The Prodigy” was defeated by Rory MacDonald late in 2012, dropping him to 1-4 since 2010. However, the Hawaiian held out hope for another fight, saying, “If I go in the gym and I’m knocking down all my sparring partners and doing awesome, I would definitely think of fighting again.”

The 34-year-old is 16-9-2 in his career, including wins over the likes of Matt Hughes, Kenny Florian, Sean Sherk and Matt Serra.

Photo credit: MMA Fighting