Empirical and EEG Evidences On the Fusion Limit of Binocular Vision in Cataract Experiencing Vision
Shi Wang, Mamoru Takamatsu

Abstract
The optical instruments design has become an earnest demand towards the arrival of an aging society. It is necessary to measure the vision difference that can be permitted before the rivalry occurs for elderly people. In this study, we measured the limit of vision fusion in the normal vision and the cataract experiencing vision which is used to simulate the elderly vision. The result shows that, the limit was within a range of 28~75nm in cataract experiencing visions which is approximately 3~39nm increased compared with that in normal visions. It also reveals that similar limit values are observed in the range of 520~560nm both in normal and cataract experiencing visions, which might give some potential evidences for designing three-dimensional equipment. In addition, EEG-based experimental results show that the middle alpha-variant rhythm is bigger than the fast alpha-variant rhythm when binocular fusion appears, while becomes smaller when binocular rivalry appears.

Full Text: PDF