Haase W, Fuisting B, Giesswein S, Steinhorst U
Abteilung für Pleoptik und Orthoptik, Universitäts-Augenklinik, Hamburg, Bundesrepublik Deutschland.
Fortschr Ophthalmol. 1991;88(1):64-7.
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.
根据贝德尔和弗洛姆（1981年）建议的程序（“三角程序”），并另外采用由孔特设计的线分割测试来检查空间不确定性。一条长度约为20度的水平线和一条较短的4.3度的线被分成两个相等的部分。与视力正常的受试者相比，斜视性弱视患者标记此类线中点的精度较低且不确定性较大。视力通过单视标（兰多尔特环）以及彼此之间间隔为2.6分视角的行视标（C测试）进行测量。令人惊讶的是，视力（甚至是行视力）与定位任务之间几乎没有相关性。
