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Kim, Yoon, and Lee: Relationship between Palpebral Fissure Height and Corneal Astigmatism of Epiblepharon
Original Article

J Korean Ophthalmol Soc 2017;58(2):192-196.

Published online: 8 September 2017

DOI: https://doi.org/10.3341/jkos.2017.58.2.192

Relationship between Palpebral Fissure Height and Corneal Astigmatism of Epiblepharon

Jinsoo Kim, M.D.1, Hyo Sung Yoon, M.D.2, Joo Yeon Lee, M.D., PhD1,

1Department of Ophthalmology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea

2Doctor Lee's Eye Clinic, Suwon, Korea

Address reprint requests to Joo Yeon Lee, MD, PhD Department of Ophthalmology, Hallym University Sacred Heart Hospital, #22 Gwanpyeong-ro 170beon-gil, Dongan-gu, Anyang 14068, Korea Tel: 82-31-380-3834, Fax: 82-31-380-3833 E-mail: kimleejy@hallym.or.kr

Received 13 October 201630 November 2016       Accepted 10 January 2017

Copyright © 2017 Korean Ophthalmological Society

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose

To study the effect of plapebral fissure height on astigmatism in epiblepharon patients.

Methods

The study consisted of 68 eyes of 34 patients who were diagnosed with epiblepharon and 88 eyes of 44 patients who had normal eyelids from September 2012 to July 2013. Data on palpebral fissure height and refractive errors were compared be-tween the epiblepharon group and the control group. Epiblepharon patients were further divided into two subgroups depending on the degree of preoperative corneal erosion in order to study the effects of corneal erosion on corneal astigmatism.

Results

The mean age was 5.6 ± 2.2 years in the epiblepharon group and 6.1 ± 1.5 years in the control group ( p = 0.339). The mean astigmatism was 2.28 ± 1.54 D in the epiblepharon group and 0.91 ± 1.07 D in the control group. The epiblepharon group showed higher astigmatism than the control group ( p < 0.001). The mean palepebral fissure height was 6.70 ± 1.19 mm in the ep-iblepharon group and 7.63 ± 1.06 mm in the control group. The epiblepharon group exhibited smaller palpebral fissure height than the control group ( p < 0.001). In the palpebral fissure height subgroups of the epiblepharon group, the <7.0 mm group showed higher astigmatism than the ≥7.0 mm group ( p = 0.026). Higher astigmatism was associated with smaller palpebral fis-sure height ( p = 0.022).

Conclusions

Patients with epiblepharon had significantly higher corneal astigmatism, and higher astigmatism was associated with smaller palpebral fissure height.

Keywords: Astigmatism, Corneal erosion, Epiblepharon, Palpebral fissure height

References

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Figure 1.
Mean astigmatism with palpebral fissure height in the control group and the epiblepharon group. Within both the control group and the epiblepharon group, the smaller palpe-bral fissure height group showed higher astigmatism ( p = 0.073, 0.026, respectively). Mann-Whitney test.
jkos-58-192f1.tif
Table 1.
Demographic features of the epiblepharon group and the control group
Epiblepharon group (n = 68) Control group (n = 88) p-value
Age at baseline (years) 5.6 ± 2.2 6.1 ± 1.5 0.339*
Sex (male:female) 1:1 1.4:1 0.423†
Astigmatism at baseline (D) 2.28 ± 1.54 0.91 ± 1.07 <0.001*
Palpebral fissure height (mm) 6.70 ± 1.19 7.63 ± 1.06 <0.001*

Values are presented as mean ± SD unless otherwise indicated.

* p-value was calculated by unpaired t-test;

† p-value was calculated by Chi-square test.

Table 2.
Distribution of the corneal erosion in the epiblepharon group
Degrees of corneal erosion Astigmatism (D) Simultaneous component analysis by ANOVA
Subgroup p-value
Grade 0 1.88 ± 1.29 Grade 1 0.292*
Grade 2 0.033*
Grade 1 1.33 ± 1.01 Grade 0 0.292*
Grade 2 <0.001*
Grade 2 3.03 ± 1.60 Grade 0 0.033*
Grade 1 <0.001*
Total <0.001†

Values are presented as mean ± SD unless otherwise indicated.

ANOVA = analysis of variance.

* p-value was calculated by post-hoc analysis by Scheffe

† p-value was calculated by simultaneous component analysis by ANOVA.

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