United Kingdom, March 16 -- Sir Elton John is struggling to sign autographs.

The 77-year-old music legend lost the vision in his right eye because of an infection and now, according to The Sun newspaper's Bizarre column, he has had to "simplify" his usual signature for the special edition of his new album 'Who Believes In Angels?'

Now, the 'Crocodile Rock' hitmaker will sign his autograph simply as his initial of E, and will complete it with the letter X which represents a kiss.

In early December, Elton revealed that he hadn't been able to "see" his new musical 'The Devil Wears Prada' properly, but said the cast "sounded great" as he attended a charity gala event put on by the stage adaptation of the 2006 flick in aid of the Elton John...