Journal article
Physical Characteristics of Ocular Structures in Chinese Children With Emmetropia
Journal of pediatric ophthalmology and strabismus, Vol.48(1), pp.50-56
01/01/2011
DOI: 10.3928/01913913-20100420-06
PMID: 20438036
Abstract
Purpose: To evaluate whether accommodation has effects on eye elongation.
Methods: Two hundred seventy-three eyes with a refractive error between +1.0 and -0.5 diopters were divided into three groups: pre-school children, grade-school children, and middle-school children. Ocular structures were measured using autorefraction and A-scan ultrasonography.
Results: There was a negative correlation between age and corneal power (r = -0.227, P = .0001), lens thickness (r = -0.263, P = .00001), and Gullstrand lens power (r = -0.452, P << .0001). There was a positive correlation between age and axial length (r = -0.432, P << .0001) and vitreous chamber depth (r = 0.505, P << .0001). Mean corneal power (P < .001) and lens power (P < .001) were significantly greater in pre-school children than in grade-school children, whereas axial length (P < .001) and vitreous chamber depth (P < .001) were greater in grade-school children. Mean lens thickness (P = .01) and lens power (P = .07) were higher in grade-school children than in middle-school children, whereas axial length (P = .024) and vitreous chamber depth (P < .001) were higher in middle-school children.
Conclusion: Ocular structures may play different roles in maintaining emmetropia. Accommodation during near work and its potential attendant hyperopic defocus could potentially drive eye elongation.
Details
- Title: Subtitle
- Physical Characteristics of Ocular Structures in Chinese Children With Emmetropia
- Creators
- Zhen-Yong Zhang - Shanghai University of Traditional Chinese MedicineRen-Yuan Chu - Fudan UniversityXing-Ru ZhangXing-Tao Zhou - Fudan UniversityMatthew R. Hoffman - University of Wisconsin School of Medicine and Public HealthJin-Hui Dai - Fudan University
- Resource Type
- Journal article
- Publication Details
- Journal of pediatric ophthalmology and strabismus, Vol.48(1), pp.50-56
- Publisher
- Slack Inc
- DOI
- 10.3928/01913913-20100420-06
- PMID
- 20438036
- ISSN
- 0191-3913
- eISSN
- 1938-2405
- Number of pages
- 7
- Grant note
- 3053770; 30328029 / National Science Foundation of China; National Natural Science Foundation of China (NSFC) NCET-07-0212 / Educational Ministry of the People's Republic of China EYF 158017 / Fudan University
- Language
- English
- Date published
- 01/01/2011
- Academic Unit
- Otolaryngology
- Record Identifier
- 9984366361702771
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