Season 4 of This Is Us is finally back after a long summer hiatus, and it's safe to say we won't be making any other Tuesday evening plans for the foreseeable future. That said, the premiere did leave many questions unanswered, as it introduced a whole new slew of characters, as well as a distance future timeline, to the already existing present, past, and far past we've seen before.

Most notably, Jack Damon stands to play a huge role in this upcoming season. The son of Kate (Chrissy Metz) and Toby (Chris Sullivan), he proves himself to be a fighter after his mom experiences complications during a premature childbirth.

We jump to the future and see Jack as an adult, fulfilling his grandmother (Mandy Moore)'s dream of becoming a world-renowned singer.

While it takes a while to understand how Jack fits into the Pearson family at first, we quickly learn that his character is visually impaired.

But is Blake Stadnik, the actor who plays Jack actually blind? Keep reading to find out.

Is Blake Stadnik actually blind on This Is Us?

Season 4's premiere introduced viewers to Kate and Toby's adult son Jack, a musician with visual impairment who has an adorable white pom called Sam, and falls in love with aspiring chef and waitress Lucy.

He quickly proposes to her, and we get a glimpse into his career as a pop star, fulfilling his grandmother Rebecca's dream of singing on stage for a huge audience.

It isn't until later, when we flashback to the present-day, where Kate and Toby have just given birth, and learn that their baby was born with retinopathy and will only be able to see colors and shapes, that we put the two storylines together.

As show creator Dan Fogelman said on a press call per Vulture, "We've known for a while now that Kate's son was going to be born prematurely and blindness retinopathy is a common thing that would come from that."

And that bit was key when it came to casting "a leading man who was without sight," Dan said.

"It was an interesting casting process because we wanted to cast a blind actor," he said. "I was worried about it," he explained of finding an actor with a similar visual impairment who "could be funny and charming but also accessible and sweet."

But once producers met Blake, "he was clearly the guy" Dan says, even though he had never acted on camera.