I've found a number of helpful videos in getting a basic understanding of ophthalmology. My favorite belong to Tim Root, and go right along with his OphthoBook chapters. This was a great suggestion to me to basically go through this book and watch the videos that go along with them. He also has a number of videos up there of procedures and different concepts, which I chose to view as I went through each section of the OphthoBook Questions book.
I also started a YouTube channel intended for my favorite ophthalmology videos, but I've really only found one that seemed really compelling to share. Please let me know if you have videos that you really value.