Near Work, Outdoor Activity, and their Association with Refractive Error

2014 ◽  
Vol 91 (4) ◽  
pp. 376-382 ◽  
Author(s):  
Zhong Lin ◽  
Balamurali Vasudevan ◽  
Vishal Jhanji ◽  
Guang Yun Mao ◽  
Tie Ying Gao ◽  
...  
Keyword(s):  
Refractive Error ◽  
Outdoor Activity ◽  
Near Work

scholarly journals The Contributions of Near Work and Outdoor Activity to the Correlation Between Siblings in the Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error (CLEERE) Study

2014 ◽  
Vol 55 (10) ◽  
pp. 6333 ◽  
Author(s):  
Lisa A. Jones-Jordan ◽  
Loraine T. Sinnott ◽  
Nicholas D. Graham ◽  
Susan A. Cotter ◽  
Robert N. Kleinstein ◽  
...  
Keyword(s):  
Refractive Error ◽  
Outdoor Activity ◽  
Longitudinal Evaluation ◽  
Near Work

scholarly journals Prevalence and Related Factors for Myopia in School-Aged Children in Qingdao

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Jin Tao Sun ◽  
Meng An ◽  
Xiao Bo Yan ◽  
Guo Hua Li ◽  
Da Bo Wang
Keyword(s):  
Technological Development ◽  
Eastern China ◽  
Outdoor Activity ◽  
Related Factors ◽  
Development Zone ◽  
Logistic Regression Models ◽  
Adolescent Students ◽  
School Aged Children ◽  
Eye Examination ◽  
Near Work

Purpose. To investigate the prevalence and related factors for myopia in school-aged children in the Economic and Technological Development Zone of Qingdao, Eastern China. Methods. A total of 4890 (aged 10 to 15 years) students were initially enrolled in this study. 3753 (76.75%) students with completed refractive error and questionnaire data were analyzed. The children underwent a comprehensive eye examination. Multiple logistic regression models were applied to assess possible factors associated with myopia. Results. The prevalence of myopia increased as the children’s grade increased (χ2=560.584, P<0.001). Low myopia was the main form of myopia in adolescent students (30.22%). With the growth of age, students spent significantly more time on near work (P=0.03) and less time on outdoor activity (P<0.001). In multivariate models, only the following variables were significantly associated with myopia: age, two myopic parents, outdoor activity time, and continuous near work without 5 min rest. Conclusions. The prevalence of myopia increased as the grade increased. Age, two myopic parents, and continuous near work time without 5 min rest were risk factors for myopia. Outdoor activities had protective effect for myopia.

scholarly journals Family history, near work, outdoor activity, and myopia in Singapore Chinese preschool children

2010 ◽  
Vol 94 (8) ◽  
pp. 1012-1016 ◽  
Author(s):  
W. Low ◽  
M. Dirani ◽  
G. Gazzard ◽  
Y.-H. Chan ◽  
H.-J. Zhou ◽  
...  
Keyword(s):  
Preschool Children ◽  
Family History ◽  
Outdoor Activity ◽  
Singapore Chinese ◽  
Near Work

(OR-118)THE ASSOCIATION BETWEEN PARENTAL MYOPIA, NEAR WORK, AND CHILDRENʼS REFRACTIVE ERROR

2000 ◽  
Vol 77 (SUPPLEMENT) ◽  
pp. 26
Author(s):  
Donald O. Mutti ◽  
Lynn G. Mitchell ◽  
Melvin L. Moeschberger ◽  
Lisa A. Jones ◽  
Karla Zadnik
Keyword(s):  
Refractive Error ◽  
Near Work

scholarly journals Accommodation: Its relation to refractive errors, amblyopia and biometric parameters

1970 ◽  
Vol 3 (2) ◽  
pp. 146-150 ◽  
Author(s):  
R Maheshwari ◽  
RR Sukul ◽  
Y Gupta ◽  
M Gupta ◽  
A Phougat ◽  
...  
Keyword(s):  
Air Force ◽  
Refractive Error ◽  
Axial Length ◽  
Anterior Chamber Depth ◽  
Refractive Errors ◽  
Age Group ◽  
Royal Air Force ◽  
Anatomical Changes ◽  
Biometric Parameters ◽  
Near Work

Aim: To study accommodation in relation to different refractive errors, amblyopia and to measure the anatomical changes in the accommodating eye Materials and methods: We studied the amplitude of accommodation (AA) in 150 patients in the age group 11 – 30 years which included emmetropes, myopes, hypermetropes and hypermetropic amblyopes using the Royal Air Force (RAF) rule. The anterior chamber depth (ACD), axial length (AxL) and lens thickness (LT) changes during accommodation were measured using an A-scan. Myopes and hypermetropes were further divided based on the amount of refractive error : < 2D, 2 -4D and > 4D. Results: Corrected low myopes had the highest accommodation amplitude (p < 0.05) followed by emmetropes. Corrected hypermetropes were found to have the lowest amplitude of accommodation (p < 0.05). The amblyopic eye had a significantly low AA compared to the non-amblyopic eye (p < 0.05). ACD decreased (p < 0.05) and LT increased (p < 0.05) during accommodation. The AxL increase was maximum in myopes (p < 0.05) followed by hypermetropes but the change was not significant in hypermetropes (p > 0.05). Conclusion: The amblyopic eye has low amplitudes of accommodation proving the benefit of near adds in amblyopic patients. Prolonged near work might induce myopia in susceptible eyes by increasing the axial length. Key words: accommodation, refractive error, amblyopia, biometric changes DOI: http://dx.doi.org/10.3126/nepjoph.v3i2.5267 Nepal J Ophthalmol 2011; 3(2): 146-150

scholarly journals Near work, outdoor activity, and myopia in children in rural China: the Handan offspring myopia study

2017 ◽  
Vol 17 (1) ◽  
Author(s):  
Zhong Lin ◽  
Tie Ying Gao ◽  
Balamurali Vasudevan ◽  
Kenneth J. Ciuffreda ◽  
Yuan Bo Liang ◽  
...  
Keyword(s):  
Rural China ◽  
Outdoor Activity ◽  
Near Work

scholarly journals The effect of sustained VDU and Non-VDU nearwork on visual acuity and refractive error in emmetropic primary schoolchildren

2012 ◽  
Vol 5 (1) ◽  
pp. 22-27
Author(s):  
Teoh Swee Chai ◽  
Chen Ai-Hong ◽  
Norhani Mohidin
Keyword(s):  
Visual Acuity ◽  
Refractive Error ◽  
Random Sequence ◽  
Visual Display ◽  
Primary Schoolchildren ◽  
Visual Display Unit ◽  
Refractive Status ◽  
Myopic Shift ◽  
After Effect ◽  
Near Work

Myopic shift in refraction following a sustained period of near-work is well documented among adult visual display unit (VDU) users. This crossover study investigates the effect of VDU near-work on visual acuity and refractive status among 7-year-old children. Thirty emmetropic and low-hyperopic schoolchildren (refractive error: -0.25DS to +1.25DS, astigmatism ≤ 1.00DC and anisometropia ≤ 1.00D) participated in this study. All subjects (15 males and 15 females) were involved in two 2-hour near-work sessions (at 40 cm), one with and one without a VDU, which were carried out in random sequence on two separate days. Distance visual acuity (monocular/binocular) and subjective refractive error were measured before and immediately after both near-work sessions. MANCOVA analysis showed that VDU work produced a significant myopic shift, -0.10 ± 0.18 D (F1,54 = 5.17, p = 0.03) in distance refractive status. This myopic shift was not found after non-VDU work. There was no significant change in monocular (F1,54 = 0.03, p = 0.86) and binocular visual acuity (F1,54 = 0.22, p = 0.64) after near-work with or without VDU. Emmetropic and low-hyperopic schoolchildren are susceptible to VDU near-work after-effect. Sustained VDU near-work causes significant myopic shift in emmetropic and low-hyperopic 7-year-old children. However, the myopic shift is not accompanied by a reduction in visual acuity.

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