"January of last year is when I first noticed there was a problem," Penn said. "I was looking at my iPhone and I really couldn't tell what was going on. At first, I thought I tore my retina, so I went to my doctor and he said, ‘I can see right away what the problem is, you have a cataract.' The doctor told me it could be traumatic or it could be from this medicine I was taking called Prednisone, which is what I had been using over the previous few years for sinus infections. I'm definitely hesitant to fight right now with the cataract in my eye."
Penn, who is coming off a lopsided loss to Rory MacDonald, hasn't ruled out retirement, but he wants to see how he bounces back from eye surgery.
"People ask me all the time if I'm going to fight again and I almost just want to change the subject because right now, I definitely don't want to fight with a cataract in my eye," Penn said. "The number one reason for the surgery is just for daily life. I have a tough time driving at night when the lights are shining and I'd like to get that back. On the other hand, you never know what you're going to be thinking if the surgery goes well. 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 cataract wasn't the result of UFC fighting. Penn thinks it was the side effect of taking medicine for sinus infections.