Backup using lacie external drive with time machine

Hi, I recently backed up my macbook with a lacie external hard drive using time machine. However, when i try to open my photos, which says there is 11.67GB there, nothing happens. It only opens an empty file. After my backup i deleted the photos from my laptop, after all i was trying to clear disc space on my macbook. Can i resolve this or can i open the file in a different way? Help