Original Article
Evaluation of the Accuracy of Non-Cycloplegic Subjective Refraction in Children with Incipient Myopia
Lingling Jiang, Jingjing Xu, Miaomiao Li, Jinhua Bao, Jiawen Huo, Björn Drobe, Hao Chen
Published 2019-03-25
Cite as Chin J Optom Ophthalmol Vis Sci, 2019, 21(3): 200-204. DOI: 10.3760/cma.j.issn.1674-845X.2019.03.008
Abstract
Objective:To determine if non-cycloplegic refraction on children with incipient myopia is accurate; to compare the differences in non-cycloplegic subjective refraction, cycloplegic autorefraction and cycloplegic subjective refraction in children with incipient myopia. Related factors that influence these measurements were analyzed to provide evidence for the preferred refractive method in the clinic.
Methods:This was a prospective clinical study. Ninety children with incipient myopia aged from 9 to 13 years were included from Eye Hospital, Wenzhou Medical University from May to September 2017. Subjective refraction, phoria, NRA/PRA, and accommodative lag were measured before cycloplegia. 1% cyclopentolate was used 3 times every five minutes. After 45 minutes, measurements were taken with autorefraction (CAR) and subjective refraction (CSR). Only the values of the right eyes were assessed using ANOVA and multiple linear regression for statistical analysis.
Results:The mean value of the spherical equivalent (SE) of non-cycloplegic subjective refraction was -1.09±0.30 D. The mean values of cycloplegic autorefraction and subjective refraction were -1.27±0.40 D and -1.09±0.33 D, respectively. There was no statistically significant difference between non-cycloplegic and cycloplegic subjective refraction (P>0.05). The cylinder component from cycloplegic autorefraction was significantly higher than that from subjective refraction (P<0.001), while the sphere components between them had no significant differences (P>0.05). Multiple linear regression analysis showed that the difference in diopter between SR and CAR was not associated with age (β=0.044, P=0.699), refractive error (β=0.091, P=0.430), phoria (β=-0.059, P=0.599), accommodative lag (β=-0.064, P=0.576), or positive relative accommodation (β=0.043, P=0.709).
Conclusions:Excluding accommodation and vergence anomalies, most children with incipient myopia can be measured accurately with non-cycloplegic subjective refraction.
Key words:
subjective refraction; cycloplegic refraction; accommodation; myopic; children
Contributor Information
Lingling Jiang
School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
WMU-Essilor International Research Centre, Wenzhou 325027, China
Jingjing Xu
School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
WMU-Essilor International Research Centre, Wenzhou 325027, China
Miaomiao Li
R &
D Optics Asia, Essilor International, Singapore 339346
Jinhua Bao
School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
WMU-Essilor International Research Centre, Wenzhou 325027, China
Jiawen Huo
School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
WMU-Essilor International Research Centre, Wenzhou 325027, China
Björn Drobe
WMU-Essilor International Research Centre, Wenzhou 325027, China
R &
D Optics Asia, Essilor International, Singapore 339346
Hao Chen
School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
WMU-Essilor International Research Centre, Wenzhou 325027, China