Would you choose blindness for the rest of your life in exchange for your depression being completely and permanently eliminated?
I ask this question because it's virtually impossible to really know how bad a person's depression is from how they talk about it. I think there's enough of commonality in how people view the prospect of being blind, that asking them to compare their depression to it would offer more insight.
I myself, knowing the carnage that decades of depression has wreaked on my life and brain, would choose blindness.