18. RESEARCH ON THE CORRELATION BETWEEN REFRACTIVE ERROR AND STRABISMUS AT HCM EYE HOSPITAL
Main Article Content
Abstract
Objectives: To examine the link between refractive errors and strabismus at HCM Eye hospital from 2017-2018, thereby determining the effectiveness of refractive errors pre and post-correction to the change of strabismus.
Methods: A retrospective cross – sectional study collected on 589 children from 1 month of birth to 23 years old at Strabismus department at the Eye hospital from 2017 – 2018.
Results: Results showed that exotropia cases show 38% in having refractive error; esotropia cases ratio in hyperopia is high, up to 53%. In Exotropia, the average prism diopter is 28,14 ± 9,22Δ before refraction, decreasing to 25,96 ± 13,16Δ after; distance tropia prism diopter before refraction is 29,66 ± 10,18Δ, decreasing to 26,27 ± 13,56Δ after (p < 0,0001). In esotropia, near tropia has the average prism diopter of 26,24 ± 9,66Δ before refraction, decreasing to 18,48 ± 16,72Δ after. Distance tropia before refraction has the average value of 27,3 ± 9,72Δ, decreasing to 18,48 ± 16,72Δ after (p < 0,0001).
Conclusion: Refractive errors have a close relationship with horizontal tropia, and appropriate treatment for refractive errors can improve the level of deviation on horizontal tropia.
Article Details
Keywords
Refractive errors, esotropia, exotropia, vertical deviation, myopia, hyperopia
References
[2] Yam J.C.S., Chong G.S.L., Wu P.K.W., et al., Predictive factors affecting the short term and long term exodrift in patients with intermittent
exotropia after bilateral rectus muscle recession and its effect on surgical outcome. BioMed Research International; 2014: 482093.
[3] Millodot M., Dictionary of Optometry and Vision Science, 8th Edition. Imprint: Elsevier, 2017.
[4] Đỗ Như Hơn, Nhãn khoa – Tập 1. NXB. Y Hà Nội; 375 – 402, 2014.
[5] World Health Organization, The impact of myopia and high myopia. Report of the Joint World Health Organization - Brien Holden Vision Institute Global Scientific Meeting on Myopia, University of New South Wales, Sydney, Australia 16–18 March, 2015.
[6] Althomali T.A., Relative Proportion of Different Types of Refractive Errors in Subjects Seeking Laser Vision Correction. The Open Ophthalmology Journal; 12:53-62, 2018.
[7] Elliot D.B., Clinical Procedures in Primary Eye Care. Publisher: Butterworth-Heinemann, 2011.
[8] Buch H.H., Wright W.K., Principles of Strabismus Surgery for Common Horizontal and Vertical Strabismus Types. Publisher: IntechOpen, 2016.