Having just taken a look at ThreeLacs ingredients, it doesn't appear to have as many live active cultures as Bio-K and the numbers vary widely. Bio-K has 50 Billion which is exponentially more than anything I've seen out there. You may do fine with TL, I'm really not familiar with it.
I was referring to the "whites" of my eyes.
Good Luck! Do your best to stay away from the sugar. That stuff is bad news