HI,
Channa andrao sometimes react with cloudy eyes when nitrate level is too high and PH is high, too.
I dont think its an ijury cause both eyes are affected.
Could be an eyworm, too. But this could be clearly seen in thee eyeball.
Go for slight waterchanges with soft acidic, nitrate free water !
And do feed not as much as you feed currently, the shown female really looks a bit too fat