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  • Title: [Discrimination difficulties--expression of disordered relative localization?].
    Author: Haase W, Fuisting B, Giesswein S, Steinhorst U.
    Journal: Fortschr Ophthalmol; 1991; 88(1):64-7. PubMed ID: 2045028.
    Abstract:
    Spatial uncertainty was examined according to a procedure suggested by Bedell and Flom (1981) ("triangle procedure") and additionally with a line-division test designed by Kundt. A horizontal line of a length of about 20 degrees and a shorter one of 4.3 degrees was divided into two equal parts. Strabismic amblyopes mark the middle of such a line with less precision and greater uncertainty than visually normal subjects do. Visual acuity was measured by single optotypes (Landolt rings), as well as by line optotypes with spaces of 2.6 min of arc between each other (C-test). Surprisingly, there was little correlation between visual acuity--even line acuity--and localization tasks.
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