Chad Henne

White was in the game because starter Chad Henne said he’d developed blurred vision after he landed on the left side of his head on a sack by Pittsburgh linebacker LaMarr Woodley.

Henne said he played several more plays, but the condition worsened when he got to the locker room at halftime and sat down.

Rookie quarterback Pat White, who was knocked out of Sunday’s loss to Pittsburgh by a brutal hit along the sideline, is undergoing tests at the hospital that revealed a likely concussion, according to a source familiar with the situation.

White should be OK, the source said, but could remain overnight for observation.

White’s injury occurred with 2:12 remaining in the third quarter of the Dolphins’ 30-24, casting a chill over the stadium as medical personnel spent several minutes attending to the 23-year-old rookie.

Ultimately, medical personnel strapped White to a backboard and carted him off the field. Miami was forced to punt on the next play, paving the way for third-stringer Tyler Thigpen’s near heroics.

White was in the game because starter Chad Henne said he’d developed blurred vision after he landed on the left side of his head on a sack by Pittsburgh linebacker LaMarr Woodley.

“I was hoping it would clear up,” Henne said. “I just didn’t have (depth) perception on the ball. I was throwing fine on the sideline. I just couldn’t really visualize my throw.”

Henne said it will be treated as an eye injury and he’ll see an eye doctor Monday.