Yes, you can use iTunes to delete photo cache. But I would like to recommend another iOS eraser tool - PanPhone. It can help you to instantly delete all these junk files to free up more space on your iOS device. It also supports to erase messages, contacts, call history, photos & video, browsing data and more with 0% recovery.
![enter image description here](https://www.panfone.com/images/screenshots/ios-eraser-free/main-interface.png)