I've read about people (who wear glasses) with multiple personalities (now termed Dissociative Identity Disorder) who have one personality with perfect vision. So when that personality is up to bat, so to speak, the person does not need glasses. Some personalities also have other kinds of differences like right or left-handedness or allergies (that the "host" personality does not). Depending upon "who" is looking through our eyes or operating our bodies, our physical apparatuses respond differently. This is all part of scientific study/observation of Dissociative Identity Disorder.
In my life, I've noticed, distinctly, that the "I" I use to look through my eyes, at any given moment, greatly affects how I see things. How I identify myself (the story I believe about me) - determines what I see, and how clearly I see each situation.
Identities are self-images, also called self-concepts. If a person can have multiple ones, it opens the question: What makes one more real or authentic than the next? But there is an authenticity beneath self-concept, breathing life and intention through each possible personality. That's an identity that can serve all of our needs and desires, unfettered by the limitation of story. When we identify with that essence, the personality or self-image works in service to us (never against us), providing great clarity in our lives.
Who or what is looking through your eyes? You can tell by what you're seeing.
From the Inside