儿童先天性或婴儿期单侧致密白内障摘除术后的双眼阅读。
Binocular reading in children following extraction of a dense congenital or infantile unilateral cataract.
机构信息
Retina Foundation of the Southwest, Dallas, Texas; Department of Ophthalmology, UT Southwestern Medical Center, Dallas, Texas.
Retina Foundation of the Southwest, Dallas, Texas.
出版信息
J AAPOS. 2020 Aug;24(4):228.e1-228.e7. doi: 10.1016/j.jaapos.2020.04.009. Epub 2020 Aug 10.
BACKGROUND
Reading relies on ocular motor function, requiring sequential eye movements (forward and regressive saccades). Binocularly discordant input from a dense congenital or infantile cataract is associated with ocular motor dysfunction and may affect the development of reading ability. The purpose of this study was to assess silent, binocular reading in children treated for unilateral congenital or infantile cataract.
METHODS
Twenty school-age children (age range, 7-13 years) treated for unilateral congenital (n = 9) or infantile (n = 11) cataract and 49 age-similar control children silently read a grade-appropriate paragraph during binocular viewing. Reading rate (words/min) and the number of forward and regressive saccades (per 100 words) were recorded using the ReadAlyzer.
RESULTS
Reading rate in children treated for a unilateral cataract did not differ significantly from controls (174 ± 59 words/min vs 195 ± 54 words/min; P = 0.1). However, they did have significantly more forward saccades (101 ± 33 saccades/100 words vs 87 ± 21 saccades/100 words; P = 0.03) but not regressive saccades (21 ± 14 saccades/100 words vs 16 ± 8 saccades/100 words; P = 0.1) compared with controls. Reading rate was not related to cataract type (congenital vs infantile), visual acuity outcome (poor vs good), or sensory fusion (fail vs pass; all P ≥ 0.1).
CONCLUSIONS
Reading rate of children treated for a dense unilateral cataract did not differ from that of controls. Increased forward saccades during reading may be due to fixation instability associated with fusion maldevelopment nystagmus prevalent in children following cataract extraction.
背景
阅读依赖于眼球运动功能，需要连续的眼球运动（向前和向后扫视）。来自密集型先天性或婴儿期白内障的双眼不一致输入与眼球运动功能障碍有关，并可能影响阅读能力的发展。本研究旨在评估接受单侧先天性或婴儿期白内障治疗的儿童的无声、双眼阅读能力。
方法
20 名学龄期儿童（年龄 7-13 岁）接受单侧先天性（n=9）或婴儿期（n=11）白内障治疗，并与 49 名年龄相似的对照组儿童一起在双眼注视下安静阅读一段适合年级的段落。使用 ReadAlyzer 记录阅读速度（每分钟单词数）和向前和向后扫视次数（每 100 个单词）。
结果
接受单侧白内障治疗的儿童的阅读速度与对照组无显著差异（174±59 个单词/分钟与 195±54 个单词/分钟；P=0.1）。然而，他们的向前扫视次数明显更多（每 100 个单词 101±33 次扫视与每 100 个单词 87±21 次扫视；P=0.03），但向后扫视次数没有差异（每 100 个单词 21±14 次扫视与每 100 个单词 16±8 次扫视；P=0.1）。阅读速度与白内障类型（先天性与婴儿期）、视力结果（差与好）或感觉融合（失败与通过；所有 P≥0.1）无关。
结论
接受密集型单侧白内障治疗的儿童的阅读速度与对照组无差异。阅读时向前扫视次数增加可能是由于与融合发育不良相关的注视不稳定引起的，这种不稳定在白内障摘除后儿童中很常见，并伴有眼球震颤。
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