Choplin, Neil T, 1952- Visual fields / Neil T. Choplin, Russell P. Edwards. - Thorofare, NJ : Slack Incorporated, c1998. - 255 p. : ill. ; 26 cm. - The basic bookshelf for eyecare professionals . Includes bibliographical references (p. 248-249) and index. ISBN: 1556423632 : CIP rev. 9781556423635 Subjects--Topical Terms: Perimetry.Visual fields.