Can you obtain a first class medical with a cataract you've had since birth but has not gotten any larger?

Also what is the FAA's stance on glaucoma? I don't have it now, but I have a catacrt and my military flight doc says I have a chance of having it so he will be giving me a visual field of view test to hopefully rule it out. Is being diagnosed with glaucoma a career ended in the part 121 world?