Edited By The International Agency For The Prevention Of Blindness Under The Direction Of John Wilson. The Iapb Wishes To Acknowledge The Contribution Made By Ann Darnbrough To The Compilation And Editing Of This Book--v. 2, T.p. Vol. 2 Contains Revised Versions Of Some Of The Papers Presented At The Second General Assembly Of The International Agency For The Prevention Of Blindness, Held In Bethesda, Maryland, Oct. 25-28, 1982. Vol. 3 Edited Under The Direction Of Carl Kupler. Includes Indexes.