Eriksen, 29, collapsed in the 43rd minute of Denmark’s Euro 2020 opener against Finland in Copenhagen.
But in his first official communication since collapsing, Eriksen said: “Hello everyone, Big thanks for your sweet and amazing greetings and messages from all around the world.
I still have to go through some examinations at the hospital, but I feel OK.
Eriksen had already been in touch with his Denmark teammates, who finished the match against Finland, losing 1-0.
“UEFA is sure it treated the matter with utmost respect for the sensitive situation and for the players,” a statement said.