Harrad R A, Hess R F
Physiological Laboratory, University of Cambridge, England.
Vision Res. 1992 Nov;32(11):2135-50. doi: 10.1016/0042-6989(92)90075-t.
We asked whether suppression in amblyopia could be accounted for by dichoptic masking as described in normals, operating in the presence of a contrast threshold difference between the two eyes. A dichoptic masking paradigm was employed to investigate binocular interaction in a mixed group of amblyopic subjects. Normal dichoptic masking was not seen after threshold differences between the two eyes were accounted for in the majority of subjects studied. We found that the binocular dysfunction did not merely follow as a consequence of the known monocular loss and that it depended upon the aetiology of the amblyopia and the spatial frequency of the stimulus.
我们探讨了弱视中的抑制现象是否可归因于如正常情况下所描述的双眼竞争掩蔽，即在两眼存在对比度阈值差异的情况下起作用。采用双眼竞争掩蔽范式来研究一组弱视受试者的双眼相互作用。在大多数研究对象中，当考虑到两眼之间的阈值差异后，未观察到正常的双眼竞争掩蔽现象。我们发现，双眼功能障碍并非仅仅是已知单眼视力丧失的结果，而是取决于弱视的病因以及刺激的空间频率。
