Interconnection between several eye biomechanical and biometric parameters in children with axial and refractive mild myopia

Authors

  • T. Ye. Tsybulskaya Zaporizhzhia State Medical University,

DOI:

https://doi.org/10.14739/2310-1210.2016.4.79776

Keywords:

Diagnostics, Children, Myopia

Abstract

Aim – to study the relationship of biometric and biomechanical indicators of corneoscleral capsule of the eye in children with axial and refractive mild myopia.

Materials and methods. Axial myopia was diagnosed in 32 children (64 eyes), refractive myopia – 18 (36 eyes). The control group – 16 children without ophthalmic diseases (32 eyes). Eye examination: visometry, automated refractometry, biomicroscopy, ophthalmoscopy, determination of the axial length of the eyeball and corneal hysteresis.

Results. Significant differences were determined in the indicators of dioptric power of the cornea: 42.2 dpt in patients with axial and 44.7 dpt with refractive myopia (p<0.05), and also difference between patients with refractive myopia and the control group, in which the diopter power of cornea was 42.6 (p<0.05). There are also significant differences in the indicators of the axial length of eyes between axial and refractive myopia – 24.5±0.64 mm and 23.1±0.43 mm (p<0.05). Significant difference with the control group in the axial length marked only in eyes with axial myopia 22.7±0.33 mm and 24.5±0.64 mm, respectively (p<0.05). Corneal hysteresis determined significantly reduced on eyes with both the axial and refractive myopia, which was significantly lower than in the indicators of emmetropic eyes of the control group 13.7 (p<0.05). Corneal hysteresis is inversely related to the axial length of the eyeball: in patients with axial myopia r -0.32, p<0.05; with refractive myopia r -0.36, p<0.05. Сorrelation between diopter power of cornea and axial length of the eyeball: r -0.53, р<0.05 in eyes with axial myopia and r -0.42, p<0.05 refractive myopia. Comparative analysis showed no significant differences between the corneal hysteresis, the axial length of the eye and the spherical component of myopia.

Conclusions. In patients with axial and refractive mild myopia corneal hysteresis is reduced on average in 1.2 and 1.1 times, in comparison with emmetropic eyes. Corneal hysteresis is independent of spherical component of myopia, decreases with increasing of axial length of the eye in 82 % of cases with axial myopia and in 76 % of cases with refractive myopia.

References

Avetisov, E. S. (2002) Miopiya [Myopia]. Moscow: Medicine. [in Russian].

Bushueva, N. N. (2012) Sovremennye aspekty patogeneza i lecheniya progressiruyuschej miopii [Modern aspects of the pathogenesis and treatment of progressive myopia]. Abstracts of Papers of the Scientific and Praktical Conference, (pp. 282–291). Kyiv. [in Ukrainain].

Iomdina, E. N., Petrov, S. Yu., Antonov, A. A., et al. (2016) Korneoskleralnaya obolochka glaza: vozmozhnosti ocenki biomekhanicheskikh svojstv v norme i pripatologii [Corneascleral eyes sheath: the possibility of assessing the biomechanical properties of normal and pathological conditions]. Oftal´mologiya, 13(2), 62–68. [in Russian].

Kvaratskheliya, N. G. (2010) Sravnitelnoe izuchenie anatomo-funkcional´nykh osobennostej glaz s gipermetropiej i miopiej u detej. (Dis…kand. med. nauk). [A comparative study of anatomical and functional characteristics of the eye with hyperopia and myopia in children. . Dr. med. sci. diss]. Moscow. [in Russian].

Uthoff, D., Hebestedt, K., Duncker, G., & Sickenberger, H. (2013) Multicentric study regarding assessment of the driving ability of LASIK and orthokeratology patients compared with conventionally corrected persons. Klin Monbl Augenheilkd, 230(3), 255–264. doi: 10.1055/s-0032-1328253.

Jiang, Z., Shen, М., Mao, G., Chen, D., Wang, J., Qu, G., & Lu, F. (2011) Association between corneal biomechanical properties and myopia in Chinese subjects. Eye (Lond), 25(8), 1083–1089. doi: 10.1038/eye.2011.104.

Terai, N., Raiskup, F., Haustein, M., Pillunat, L. E., & Spoerl, E. (2012) Identification of biomechanical properties of the cornea: the ocular response analyzer. Curr Eye Res, 37(7), 553–562. doi: 10.3109/02713683.2012.669007.

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How to Cite

1.
Tsybulskaya TY. Interconnection between several eye biomechanical and biometric parameters in children with axial and refractive mild myopia. Zaporozhye medical journal [Internet]. 2016Oct.13 [cited 2024Apr.20];18(4). Available from: http://zmj.zsmu.edu.ua/article/view/79776

Issue

No. 4 (2016): Zaporozhye medical journal

Section

Original research

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