Is This Popeye?

[Dino325]

Hi guys, I just got this guy from pet store. I didn't notice earlier one side of his eye is bigger than the other, but both of his eyes are moving fine, active and no cloudy substance, so I'm not sure if it's normal or it's Popeye disease. Currently I put him in 5gal hospital tank and try to treat with melafix. Anyone can explain more in detail about this and guide me what to do next?

 

[Skavatar]

there was a similar thread a few months ago, most ppl said it was normal for one eye to be bigger.