One who has seen clearly will seek out glasses to enable himself to see if his vision becomes impaired. He knows what he is missing, how it serves as a hindrance to his activity.
One who has never seen clearly and whose vision has always been impaired will not seek out glasses. Why would they? They get along just fine.
The one who has seen will always strive to maintain his vision. The one who has never seen has to be shown directly what they are missing, to see the alternate reality with their own eyes.
How does your vision affect your reality? What details are you unable to see and how does that shape your experience of the world around you? Do you value the ability to see clearly, honestly, and truly?