You could call it amblyopia.

It’s kind of fun to say. The syllables roll over each other like wet pumpkin seeds.

Most people won’t know what you’re talking about, unless you hang out with a lot of eye nerds. You’ll probably find yourself saying, “… which is the medical term for ‘lazy eye’ …” all the time.

I just googled “amblyopia” and the result came up as:

Lazy Eye

Also called: amblyopia