DOI: http://dx.doi.org/10.18203/2394-6040.ijcmph20213025

The prevalence of myopia among school-going children (6-14 years) in Chidambaram, Tamil Nadu: a cross-sectional study

T. Dhivyaa, P. Kalyani, A. John William Felix

Abstract


Background: Refractive errors are one of the most common causes of visual impairment worldwide. Uncorrected, under corrected and undetected refractive errors among school-going children are the most significant problem in developing countries like India. Schools are the best place for early detection of ocular morbidity. Myopia, hypermetropia and astigmatism are the three main types of refractive errors, of which myopia is the most common type in school-going children.

Methods: This descriptive cross-sectional study was carried out for the period of 6 months from October 2019 to March 2020 among school-going children in the field practice area of Chidambaram. 575 students from two government and 2 private schools were selected conveniently. Data were collected using a pre-tested, semi-structured questionnaire and analysed using Statistical Package for social sciences (SPSS) software version 23. Descriptive statistics were used and a Chi-square test of significance was applied.

Results: The prevalence of myopia was found to be 12.9%. There is a significant association between the frequency of reading hours, time spent on outdoor activities and mobile usage and the presence of myopia (p<0.05).

Conclusions: The risk factors like hours of reading books, time spent on outdoor activities and mobile usage are the contributing factors for the development of refractive error like myopia. They are easily detectable through the program on eye screening of school children.

 


Keywords


Prevalence, Refractive error, Myopia, Risk factors

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References


Irsch K, Guyton DL. Anatomy of Eyes. In: Li SZ, Jain A, eds. Encyclopedia of Biometrics. Boston, MA: Springer; 2009: 6-11.

WHO. Vision impairment and blindness, 2020. Available at: https://www.who.int/news-room/fact-sheets/detail/blindness-and-visual-impairment. Accessed on 10 June 2021.

Naidoo KS, Jaggernath J. Uncorrected refractive errors. Indian J Ophthalmol. 2012;60(5):432-7.

Ang M, Wong TY. Updates on Myopia: A Clinical Perspective. Springer: Singapore; 2020.

Bourne RRA, Flaxman SR, Braithwaite T, Cicinelli MV, Das A, Jonas JB, et al. Magnitude, temporal trends, and projections of the global prevalence of blindness and distance and near vision impairment: a systematic review and meta-analysis. Lancet Glob Health. 2017;5(9):888-97.

GBD 2019 Blindness and Vision Impairment Collaborators, Vision Loss Expert Group of the Global Burden of Disease Study. Causes of blindness and vision impairment in 2020 and trends over 30 years, and prevalence of avoidable blindness in relation to VISION 2020: the Right to Sight: an analysis for the Global Burden of Disease Study. Lancet Glob Health. 2021;9(2):144-60.

Mukherji R, Seal SC. An epidemiological study of refractive errors among college students in Calcutta. J Indian Med Assoc. 1979;73(9):159-64.

Goswami A, Ahmed E, Saha PL, Roy IS. An epidemiological pattern of cases of refractive errors. J Indian Med Assoc. 1979;72(10):227-8.

Kamath BTP, Bengalorkar GM, Prasad B. Comparative Study Of Prevalence Of Ocular Morbidity Among School Going Children Of Government And Private Schools In Rural Karnataka, South India. Int J Current Res Review. 2013;5:69-76.

Limburg H, Vaidyanathan K, Dalal HP. Cost-effective screening of schoolchildren for refractive errors. World Health Forum. 1995;16(2):173-8.

GOI Planning Commission. Annual report 2003 2004, Ministry of health and family welfare, 2004. Available at: 64.100.161.239/reports/genrep/are0304. Accessed on 10 June 2021.

All about vision. Nearsightedness: Myopia symptoms and correction options, 2021. Available at: https://www.allaboutvision.com/en-in/conditions/myopia/. Accessed on 10 June 2021.

WHO. Diet, nutrition and the prevention of chronic diseases, 2003. Available at: http://apps.who.int/iris/bitstream/handle/10665/42665/WHO_TRS_916.pdf?sequence=1. Accessed on 10 June 2021.

Saxena R, Vashist P, Tandon R, Pandey RM, Bhardawaj A, Menon V, Mani K. Prevalence of myopia and its risk factors in urban school children in Delhi: the North India Myopia Study (NIM Study). PLoS One. 2015;10(2):117349.

Hung HD, Chinh DD, Tan PV, Duong NV, Anh NQ, Le NH, et al. The Prevalence of Myopia and Factors Associated with It Among Secondary School Children in Rural Vietnam. Clin Ophthalmol. 2020;14:1079-90.

Agarwal D, Saxena R, Gupta V, Mani K, Dhiman R, Bhardawaj A, et al. Prevalence of myopia in Indian school children: Meta-analysis of last four decades. PLOS ONE. 2020;15(10):240750.

Holden BA, Fricke TR, Wilson DA, Jong M, Naidoo KS, Sankaridurg P, et al. Global Prevalence of Myopia and High Myopia and Temporal Trends from 2000 through 2050. Ophthalmology. 2016;123(5):1036-42.

Fan DS, Lam DS, Lam RF, Lau JT, Chong KS, Cheung EY, et al. Prevalence, incidence, and progression of myopia of school children in Hong Kong. Invest Ophthalmol Vis Sci. 2004;45(4):1071-5.

Grzybowski A, Kanclerz P, Tsubota K, Lanca C, Saw SM. A review on the epidemiology of myopia in school children worldwide. BMC Ophthalmol. 2020;20(1):27.

Huang HM, Chang DS, Wu PC. The Association between Near Work Activities and Myopia in Children-A Systematic Review and Meta-Analysis. PLoS One. 2015;10(10):140419.

Saxena R, Vashist P, Tandon R, Pandey RM, Bhardawaj A, Gupta V, et al. Incidence and progression of myopia and associated factors in urban school children in Delhi: The North India Myopia Study (NIM Study). PLOS ONE. 2017;12(12):189774.

Mutti DO, Mitchell GL, Moeschberger ML, Jones LA, Zadnik K. Parental myopia, near work, school achievement, and children's refractive error. Invest Ophthalmol Vis Sci. 2002;43(12):3633-40.

Binu J, Jose R, Simon C. Prevalence of Myopia and Its Associated Risk Factors among School Children in Kollam- Kerala. Int J Health Sci. 2016;(6):9.

Kumar DA, Bhusan NA. Prevalence Of Ocular Morbidities Among School Children In A Rural Block Of Cachar, Assam. JEMDS. 2017;6(55):4124-7.

Mccrann S, Loughman J, Butler JS, Paudel N, Flitcroft DI. Smartphone use as a possible risk factor for myopia. Clin Exp Optom. 2021;104(1):35-41.

Jin JX, Hua WJ, Jiang X, Wu XY, Yang JW, et al. Effect of outdoor activity on myopia onset and progression in school-aged children in northeast china: the sujiatun eye care study. BMC Ophthalmol. 2015;15(1):73.

Xiong S, Sankaridurg P, Naduvilath T, Zang J, Zou H, Zhu J, et al. Time spent in outdoor activities in relation to myopia prevention and control: a meta-analysis and systematic review. Acta Ophthalmologica. 2017;95(6):551-66.

Chinawa N, Adio A, Chukwuka I. Is There a Causal Relationship between Myopia and Intraocular Pressure. British J Med Medical Res. 2017;20:1-7.

Xie Z, Long Y, Wang J, Li Q, Zhang Q. Prevalence of myopia and associated risk factors among primary students in Chongqing: multilevel modeling. BMC Ophthalmol. 2020;20(1):146.

Czepita M, Czepita D, Safranow K. Role of Gender in the Prevalence of Myopia among Polish Schoolchildren. J Ophthalmol. 2019;2019:9748576.

Kumari VK, Lakshmi MS. Screening for simple myopia among high school children in Hyderabad city. JEBMH. 2016;3(24):1097-9.