ASSESSMENT OF ANISOMETROPIA IN VISUALLY IMPAIRED CHILDREN AGED 6-14 YEARS IN HO CHI MINH CITY

Tran Dinh Minh Huy, Le Anh Tuan, Nguyen Le Hoang Nguyen, Phan Hong Phuc, Huynh Chi Nguyen, Tran Huy Hoang

Main Article Content

Abstract

Objectives: To assess the prevalence and characteristics of anisometropia in children aged 6-14 years with visual impairment in Ho Chi Minh City.


Subjects and methods: A retrospective descriptive study was conducted on 3593 visually impaired children aged 6-14 years in Ho Chi Minh City from August 2023 to October 2023.


Results: The prevalence of anisometropia was 26.30%, with 23.60% showing a refractive difference between 1.00D and 3.00D. The rate of amblyopia was higher in all asymmetric refractions from 1.00D and above. Primary school children had a significantly lower prevalence of anisometropia (18.70%) compared to secondary school children (30.96%). The prevalence of unilateral refractive error was higher than that of bilateral refractive error.


Conclusions: The prevalence of anisometropia in visually impaired children aged 6–14 years in Ho Chi Minh City was 26.30%. There were statistically significant correlations between anisometropia and amblyopia, school level, and the laterality of refractive error.

Article Details

References

[1] Zhou Y, Zhang XF, Chen XJ et al. Prevalence of anisometropia and influencing factors among school-age children in Nantong, China: a cross-sectional study. Frontiers in Public Health, 2023, 11: 1190285.
[2] South J, Gao T, Collins A et al. Aniseikonia and anisometropia: implications for suppression and amblyopia. Clinical and Experimental Optometry, 2019, 102(6): 556-565.
[3] Vincent S.J., Collins MJ, Read SA et al. Myopic anisometropia: ocular characteristics and aetiological considerations. Clinical and Experimental Optometry, 2014, 97(4): 291-307.
[4] Tran Tat Thang, Nguyen Thi Thao Trang, Nguyen Sa Huynh. Evaluation of anisometropia in schoolchildren attending eye examination at Nghe An Eye Hospital. Vietnam Medical Journal, 2023; 527(2).
[5] Flitcroft I, McCullough S, Saunders K. What can anisometropia tell us about eye growth?. British Journal of Ophthalmology, 2021, 105(9): 1211-1215.
[6] Yamashita T, Watanabe S, Ohba N. A longitudinal study of cycloplegic refraction in a cohort of 350 Japanese schoolchildren. Anisometropia. Ophthalmic and Physiological Optics, 1999, 19(1): 30-33.
[7] Tong L, Chan YH, Gazzard G et al. Longitudinal study of anisometropia in Singaporean school children. Investigative Ophthalmology & Visual Science, 2006, 47(8): 3247-3252.
[8] Barrett BT, Bradley A, Candy TR. The relationship between anisometropia and amblyopia. Progress in retinal and eye research, 2013, 36: 120-158.
[9] Tran Tat Thang, Pham Van Minh, Le Van Tung. The effect of anisometropia on visual function in schoolchildren examined at Nghe An Eye Hospital. Vietnam Medical Journal, 2023; 524(2).
[10] Nguyen Duc Anh. Causes and characteristics of amblyopia in children examined at the Central Eye Hospital—Vietnam Journal of Science and Technology, Part B, 2017; 59(6).
[11] Flitcroft DI. Is myopia a failure of homeostasis?. Experimental eye research, 2013, 114: 16-24.