I see patients with similar symptoms quite often. Folks often describe a bright or colorful pattern (sometimes wavy or zigzag in nature) and it can be in one eye and moves to the other, sometimes affecting the central vision. Sometimes there is a headache following this as well. This is called an ophthalmic migraine. The names can be confusing. Think of it this way:
only the visual symptoms - no headache = ophthalmic migraine (also known as ocular migraine).
headache with an aura is called a classic migraine (headache with some peculiar visual warning / episode prior to headache)
Migraines are common and typically require no treatment, except for more rest, less stress, etc. Sometimes caffeine can help shorten the episode. I hope this helps answer your question, if not, just let me know, Regards