I was stunned by a participant of program "Entertainment ke liye kuch bhi karega" in sony, where she (12 years) can read texts without actually seeing them, bound her eyes with multi layer.

Her doctor couldnt explain the situations, so did others too.

Here I can deduce several assumptions -

1. The full thing was got up (but barely looked so, or must have been perfectly act)
2. Her photoreceptor layer can actually percept light rays through solid medium.
3. Outer membrane of eye is transparent or some abnormal cells.