Nice article, I used to wonder if others see them!

I should admit that I too see "floral" patterns in colors when I mash my eyeballs for few minutes (I know its harmful but it becomes itchy sometimes). They are mostly colorful mainly in florescent green and bright purple. They are amazing, I can't describe them. I even see an eye-shaped greenish hallow for few minutes after mashing my eyes. Could there be reason? Anyone having these? (I don't smoke/drink ^__^).