Rocketman lost his sight in one eye this summer due to a “serious” infection, making his recovery “extremely slow.”

In a post on Instagram, Grammy-winning singer Elton John revealed that he has “limited vision in one eye” due to an eye infection.

“I am recovering, but it is an extremely slow process and it will be some time before my vision returns in the affected eye,” he wrote. “I am so grateful to the wonderful team of doctors and nurses and my family who have taken such good care of me over the last few weeks.”

Despite the severity of the infection, John ended the message on an optimistic note.

“I have spent the summer quietly recovering at home and am positive about the progress I have made so far in my healing and recovery,” he said.

At the time of writing, the post has received over 340,000 likes and 6,300 comments, with celebrities expressing their affection for the 77-year-old legend.

“Get well soon,” wrote Bronx native Billy Joel.

“Sending you lots of love Elton! Feel better soon. Love you,” Versace face Donatella Versace commented, complete with two red heart emojis. John liked the comment, among many others.

Marc Jacobs, Chappell Roan, Billie Jean King, Billy Porter and many more celebrities were seen in the comments, offering congratulations and messages of support.

According to the Daily Beast, “John is effectively retired from the road, having played his last tour at the Glastonbury Festival last June to an estimated 120,000 people. He has since performed a number of one-off benefit performances and is expected to head to Los Angeles next month for a cancer gala.”