Check out this page I wrote on co-consciousness, but note that this is one of the pages on this site that have not been edited by a specialized in DID. It will probably change quite a bit after he edits it.
http://www.dissociative-identity-disord ... sness.htmlI had an entire level of blind alters. I used trance logic - gave them magic so they could see.
My Gorilla was also blind. I recently gave him magic, but the pain is so great when he opens his eyes that OUR eyes hurts, water... etc.... In therapy if we get him to focus on something other than the memories his eyes are fine, but otherwise they go right back to hurting. It's like sand is being dug into his eyes. Other alters have this problem too even though they are not blind. Also when I was what you called blended with Gorilla, I could see, but if he took over more than me, our eyes would shut and he would look around with them closed. My vision too is different depending on who is out. I called for Stephan to take my drivers license eye exam and got the limitation taken off my drivers license. he he
So - in your case.... my wild guess is that it all depends.As you can see my various alters react differently. If an alter is scared I have learned 2 tricks in therapy. One is to be there for them and love them, the other is to have another alter come close to them and help them. I have one called Hope that bounces all over the place doing what we call "plopping." When someone is distressed I ask for someone inside to help them. Most of the time it's Hope, but not always. There are some things she cannot handle. In return others have plopped inside Hope and helped her out.