Silver Book Fact
Blindness (compared to no visual impairment) is associated with more than $2,000 in excess annual medical expenses per person.
Frick K, Gower E, Kempen J, Wolff J. Economic Impact of Visual Impairment and Blindness in the United States. Archives of Ophthalmology. 2007; 125(4): 544-50. http://archopht.ama-assn.org/cgi/content/abstract/125/4/544