Visual search in infantile nystagmus syndrome

Research on infantile nystagmus syndrome (INS) and visual search is limited. Conducting this research could assist practitioners in understanding how INS affects the real-life visual activities of patients and aid in developing new clinical visual function assessments for INS. The aim of this work i...

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Bibliographic Details
Published in:Clinical and experimental optometry 2024-08, Vol.107 (6), p.641-648
Main Authors: Dai, Bing, Cham, Kwang Meng, Abel, Larry Allen
Format: Article
Language:English
Subjects:
Adult
Female
Fixation, Ocular - physiology
Humans
Male
Middle Aged
Nystagmus
Nystagmus, Congenital - physiopathology
Visual Acuity - physiology
Visual perception
Young Adult
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Summary:Research on infantile nystagmus syndrome (INS) and visual search is limited. Conducting this research could assist practitioners in understanding how INS affects the real-life visual activities of patients and aid in developing new clinical visual function assessments for INS. The aim of this work is to investigate how subjects with INS perform visual search tasks, and, particularly, to assess how INS subjects perform when targets are located at their null position or away from it, and when under additional cognitive demands. INS subjects (  = 15) and controls (  = 20) performed conjunction and feature search tasks, both with and without mental arithmetic. Search performance was assessed using log-transformed total search time, gaze-dependent search time, and accuracy. Cognitive demand was quantified by pupil size and the NASA task-load index score. INS subjects showed longer search times compared to controls in conjunction search (  
ISSN:0816-4622
1444-0938
1444-0938
DOI:10.1080/08164622.2023.2260805