Ajax defender Daley Blind has undergone a successful heart operation.

Blind, 29, who previously played for Manchester United, suffered from dizziness in his side's Champions League clash with Valencia this week, but continued playing.

Thank you all ?? pic.twitter.com/7Z32bcwb5X

— Daley Blind (@BlindDaley) December 21, 2019

Blind's procedure saw a subcutaneous implantable defibrillator fitted, Ajax said in a statement on Saturday.

The club added that the defender would miss their trip to Qatar for a training camp in January.

"The most important thing is that I'm feeling good at the moment and trying to come back as soon as possible," Blind said.