What is the fine-grained topic of the following text: Tina Gao, from the School of Optometry and Vision Science at the University of Auckland in New Zealand, noted in an accompanying commentary that "further research is needed to identify the underlying factors leading to potential visuomotor deficits, and this knowledge can then be used to identify the children who perform significantly worse than the normal range." Only return the topic.
Research on potential visuomotor deficits in children