Amount for special glasses that I can see with; non-glaring, lightweight frame and lenses, special crafting: $500
Amount for contact lens just for cosmetic reasons so I don't look like Marilyn Manson: $180.
Amount for immunosuppressant medication picked up today to sustain the life of the stem cells in my cornea: $293 ($4.88 a pill)

Amount to be able to see from a legally blind point of view: ....priceless?....