F. Stumpp

Increased detection rate of glaucomatous visual field damage with locally condensed grids: a comparison between fundus-oriented perimetry and conventional visual field examination.

Pamela A Sample, Reinhard Vonthein, Ulrich Schiefer, 2003, Archives of ophthalmology.

Evaluation of Glaucomatous Visual Field Loss with Locally Condensed Grids Using Fundus-Oriented Perimetry (FOP)

U Schiefer, J Paetzold, U. Schiefer, 2001, European journal of ophthalmology.