I have known two people with this condition. One is a writer who now has a very successful career as a poet writing about losing her sight. The other was a computer guy, who I have lost touch with, but felt really sorry for, as he had to keep moving closer and closer to the screen to see anything until he went blind and I knew computers pretty much gave him his only joy in life.
I myself have central serous chorioretinopathy which is basically bleeding from the back of the retina. It could be the sign of an eventual oncoming stroke, or just lead to blurring in my vision. Whether it heals or not I'm going to keep looking at the shit I want to look at, so that in the unfortunate event that I am blinded, I will have some image memories to draw on while in the darkness. But certainly images of real life, and not those captured on a computer screen will be more useful if that were to happen, so perhaps I'll head outside too - (if only it wasn't 12.30am where I live).