The distribution of near point of convergence, near horizontal heterophoria, and near vergence among myopic children in South Korea
نویسندگان
چکیده
منابع مشابه
The distribution of near point of convergence, near horizontal heterophoria, and near vergence among myopic children in South Korea
BACKGROUND/PURPOSE To assess the distribution of near point of convergence (NPC), near heterophoria, and near vergence among myopic school children in South Korea. METHODS One hundred and thirty-six elementary school children, aged 8-13 years, were each given a thorough eye examination including binocular vision testing, NPC using standard push-up technique, horizontal heterophoria measuremen...
متن کاملRelationships between lateral heterophoria, prism vergence, and the near point of convergence.
Numerous physiologic functions of the binocular neuromuscular mechanism have been measured for years with various kinds of testing equipment. Relatively few studies have been made to determine to what extent these various testing devices measure the same or different characteristics. This study was designed to investigate the relationships between lateral heterophoria, prism vergence, and the n...
متن کاملEffect of heterophoria type and myopia on accommodative and vergence responses during sustained near activity in children
The influence of phoria-type and myopia on changes to vergence and accommodation during prolonged near-task was examined in 53 children. Participants were classified into phoria and refractive categories based on near phoria and cycloplegic refraction respectively. Measures of near phoria, binocular (BA) and monocular accommodation (MA) were obtained before and during a 20 min task when childre...
متن کاملNear work-induced contrast adaptation in emmetropic and myopic children.
PURPOSE Contrast adaptation may induce an error signal for emmetropization. This research aims to determine whether reading causes contrast adaptation in children and, if so, to determine whether myopes exhibit greater contrast adaptation than emmetropes. METHODS Baseline contrast sensitivity was determined in 34 emmetropic and 34 spectacle-corrected myopic children for 0.5, 1.2, 2.7, 4.4, an...
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ژورنال
عنوان ژورنال: Taiwan Journal of Ophthalmology
سال: 2016
ISSN: 2211-5056
DOI: 10.1016/j.tjo.2016.07.001