Need advice

Hey everyone, I could use some advice.

I was planning on buying a French bulldog puppy from a woman who had a litter of three. She’s only selling two of them, so I got curious about what happened to the third puppy. I ended up seeing a post she made on Facebook saying there’s a possibility that the third one might be blind. That his eyes are a cloudy color she said she doesn’t plan on selling him but if she finds someone that’ll take good care of him she’ll consider finding me a home the puppy from the litter is only 3 weeks

Now I’m a little concerned. Should I be worried about getting one of the other puppies from this litter? Is something like that usually genetic, or could it just be a one-off issue with that specific puppy?

Are there any red flags I should be looking out for in this situation before I move forward?

I don’t want to overthink it, but I also want to make sure I’m making a smart decision. Any advice or similar experiences would really help.