Girls' Generation's Sooyoung showed tears while talking about her father's eye condition during the recording for the upcoming episode of 'Strong Heart'.

During the recording for the last episode, Sooyoung opened up about her personal life, and couldn't help but become overwhelmed by emotion as she discussed her father. "When my father made a visit to the hospital he found out there was a problem with his retina."

She also explained how she and her members came to be ambassadors for a blindness cure campaign, ringing the hearts of the others on set.

The full story will be revealed through the final episode of 'Strong Heart' on the 12th.