I’m 5 years post-op from incisional eye surgery and ptosis correction. My nose was originally low, so I asked them to do only a little epicanthoplasty, but after I finally decided to get nose surgery, my Mongolian fold stretched out, and I ended up getting an epicanthoplasty-like effect.
Please keep this in mind when getting eye surgery. If you get nose surgery first, it probably won’t matter, though.