Joe Jackson reportedly suffered three heart attacks as well as a suspected stroke on his 87th birthday.
The showbiz patriarch - whose children include Janet Jackson and the late Michael Jackson - was admitted to Albert Einstein Hospital in Sao Paulo, Brazil over the weekend
His publicist told TMZ that Joe's heart stopped beating for 10 seconds and he had a pacemaker inserted.
He originally lost his vision after an artery burst behind his eye- which is believed to have caused the stroke.
His family are said to want him to fly back to the U.S. for further treatment but it is currently too risky.
If the music manager - who also suffers from diabetes - has suffered a stroke, it is his fourth.
He previously suffered a mild stroke in November 2012, and was placed under observation at a Las Vegas hospital after complaining of pains in his head and difficulty standing.
Hours before his medical emergency, 49-year-old Janet posted a birthday message to her dad on her Twitter page.
She wrote: "Wishing my Father, @Joe5Jackson a Happy Birthday.
"I want to tell the world, I love and honor you (sic)."
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