The distribution of near point of convergence, near horizontal heterophoria, and near vergence among myopic children in  South Korea

Conclusion There were no statistically significant correlations between the school childrens' ages and NPC, near horizontal heterophoria, and near fusional vergence, except near positive fusional vergence. Also, unlike many studies, myopic magnitude did not present a significant correlation with near phoria and fusional vergence.
Source: Taiwan Journal of Ophthalmology - Category: Opthalmology Source Type: research