Expanding Your Veins And Capillaries Ocular Veins Question?

Ocular veins question? - expanding your veins and capillaries

I write a story that could develop the veins in the eyes of many people and how it affects the iris and other parts of the eye include miracles have.
If life is in danger, or ask someone who is blind, I'm likely to be deleted from the history.

PS: I'm down to use with a bundle of medical jargon, so little words in their response.