Zhè wèi xiànnián bāshí suì de lǎorén réngrán sīwéi mǐnruì.
This elderly person, now aged eighty, still has a sharp mind.
Tips
usage
现年 is a formal/journalistic expression. In news writing or official biographies, it precedes a person's age to mean 'currently aged X.' Casual speech uses 今年X岁 instead.