My largest cardinal has milky corneas

Both eyes are affected. None of the other fish show anything similar. It's impossible to tell whether the milkiness sits on top of the cornea or whether the cornea itself is milky.

Bro is currently enduring an acriflavine+MB bath. We'll see. If it is a cataract/age related thing, well, time will tell. He/she is still capable of feeding but isn't as active as the others.