OpenCV for several images

Hi everybody,

I´m making an app that has several images saved in a folder. I use OpenCV to recognize the eyes in one of these images, but I want to use OpenCV in every photo to recognize the eyes in everyone. I tried to do this, putting every photo on a quad and then using OpenCV, but my problem is I don´t know how can I do to run one quad after another, or something similar, to avoid using OpenCV at the same time.

Thanks a lot in advance!!