Returning to practice on Wednesday, albeit with limited work, Washington Redskins rookie Su'a Cravens is progressing from a concussion suffered earlier this month, but still must pass all tests before playing in a game.

While Su'a Cravens – sporting a pair of new glasses as part of his rehabilitation – surprised some people on Tuesday when he sent out a message on social media about his long-term vision, the rookie safety is progressing and return to practice with a limited workload on Wednesday.

"He's coming along pretty good," Redskins head coach Jay Gruden said. "He's still in the program and we're hoping to get positive results here shortly."

Cravens was originally removed from the Redskins' Week 4 victory over the Cleveland Browns after he fell to the turf at FedExField following a failed tackle attempt. The 21-year-old has been in the concussion protocol ever since, missing last Sunday's game against the Baltimore Ravens.

"I've talked to him a lot and he said he feels good, but he still has to take the necessary steps," Gruden said. "And the tests that they take before they have the concussion and then after, they see the doctor and they've got to make sure there's no recurring symptoms and all that. It's a tricky deal, it really is. It's good that we're more careful than just throwing them back out there when they say they're OK because they have to make sure they pass all the necessary tests."

So far this season, the 2016 second-round pick has collected 14 tackles along with three passes defensed and a game-saving interception against the New York Giants, the highlight play of his career to date.

He's been working at inside linebacker as a situational player behind starters Will Compton and Mason Foster, but could potentially branch out to safety once he returns.

But before he can make another appearance in game action, Cravens needs to be fully healthy.

"I think anytime you're talking about concussions nowadays with what we know about them, you're going to have some concern," Gruden said. "That's why we take the necessary steps to make sure they see the right people and we don't put them back on the field until they've been clarified as OK. So we just have to play it by ear. You know, we take the players best interest, number one, as far as getting better. And when they are better, we get them back out there."

As for his social media presence, well, he'll learn.

"He understands now fully what not to put on Instagram and Twitter and what to put on there," Gruden said with a smile. "You know, he just… I don't think he meant anything by it. But, it wasn't the right thing to do at that time. He's learned, young guy."