Before I answer this question, I would like to first thank all the commentators for their interest in my disability and their questions about the obstacles I have faced.

I lost my vision gradually throughout my childhood so that, while I could still read large print when I was ten or eleven, I could not when I was thirteen. Using a cane became necessary in my junior year of high school.

By the time I went to college (Brandeis) and grad school (Harvard) I was totally blind.
I started at Brandeis in 1968. These were the pre-personal computer dark ages. For all people, the personal computer has radically changed their lives; for blind folks, this change is downright revolutionary.