Dragic suffered the injury when he took an elbow to the right eye during the team's win against the Toronto Raptors on Saturday night.
Dragic said he expected to play Sunday but the injury worsened overnight to the point where the swelling completely shut his eye.
This is why Goran Dragic cannot play tonight:; pic.twitter.com/4QTAxGLF2d— Ira Winderman (@IraHeatBeat) March 12, 2017
"I cannot even see in the right eye," Dragic said Sunday. "I didn't imagine it was going to be so bad. The right eye is completely closed. The doctor checked the eye last night. He said the eye is fine. Just swelling. We will do treatment [to get some] swelling down. There's just pressure. No pain."
Doctors have assured the team's leading scorer that there will be no long-term damage in the eye.
"His eye is mostly shut," Heat coach Erik Spoelstra said. "I was less than half-joking this morning about cutting the eye so he could see like Rocky. Everyone is calling him Rocky Drago. He really wanted to play. But the smart thing to do is to sit him and hopefully the swelling will be down by [the Heat's next game] Wednesday" against New Orleans.