Hou Chuan
The Smith-Kettlewell Eye Research Institute, United States.
MethodsX. 2022 Aug 22;9:101829. doi: 10.1016/j.mex.2022.101829. eCollection 2022.
There is converging evidence of attention deficits in individuals with amblyopia. It has been reported that selective visual attention is allocated preferentially toward the non-amblyopic fellow eye in strabismic ambloypes. This attention allocation bias between the eyes is found related to visual suppression in amblyopia. In this study, I introduced a novel method, which uses dichoptic attention tasks to train individuals with amblyopia and has been demonstrated alleviating visual suppression and improving visual functions while reducing interocular attention bias in adults with amblyopia. The method consists of the following components:•The training tasks include three attention factors (searching, counting and cueing) to implement selective visual attention to the amblyopic eye dichoptically.•With a dichoptic approach, the targets are presented to the amblyopic eye while the distractors are simultaneously presented to the fellow eye. The tasks are to search and count the targets that are presented to the cued eye among the distractors.•The training stimuli avoid typical contrast sensitivity-based tasks, and the targets are highly visible allowing them to be seen by the amblyopic eye with poor visual acuity.
越来越多的证据表明弱视个体存在注意力缺陷。据报道，在斜视性弱视患者中，选择性视觉注意力优先分配到非弱视的对侧眼。这种两眼之间的注意力分配偏差被发现与弱视中的视觉抑制有关。在本研究中，我引入了一种新方法，该方法使用双眼分视注意力任务来训练弱视个体，并且已证明在减少弱视成人的两眼间注意力偏差的同时，可减轻视觉抑制并改善视觉功能。该方法由以下部分组成：
•训练任务包括三个注意力因素（搜索、计数和提示），以双眼分视方式对弱视眼进行选择性视觉注意力训练。
•采用双眼分视方法，目标呈现给弱视眼，而干扰物同时呈现给对侧眼。任务是在干扰物中搜索和计数呈现给提示眼的目标。
•训练刺激避免基于典型对比敏感度的任务，并且目标具有高可见性，使视力差的弱视眼能够看到它们。
