Choplin, Neil T. Visual field testing : with the Humprey field analyzer / by Neil T. Choplin and Russell P. Edwards - Thorofare, N.J. : Slack Inc., 1995 - 192 p. : ill. ; 28 cm. ISBN: 1556423632 : RM130.68 Subjects--Topical Terms: Perimetry--MethodsPerimetry--InstrumentationVisual Fields Tests