Changes in the Horizontal Angular Direction of Lower Eyelashes with Age in Korean Patients

Jungah Huh; Jinhwan Park; Sehyun Baek

doi:10.3341/jkos.2018.59.2.105

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Huh, Park, and Baek: Changes in the Horizontal Angular Direction of Lower Eyelashes with Age in Korean Patients

Original Article

J Korean Ophthalmol Soc 2018;59(2):105-109.

Published online: 25 September 2018

DOI: https://doi.org/10.3341/jkos.2018.59.2.105

Changes in the Horizontal Angular Direction of Lower Eyelashes with Age in Korean Patients

Jungah Huh, MD, Jinhwan Park, MD, Sehyun Baek, MD, PhD

Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea

Address reprint requests to Sehyun Baek, MD, PhD Deparment of Opthalmology, Korea University Guro Hospital, #148 Gurodong-ro, Guro-gu, Seoul 08308, Korea Tel: 82-2-2626-1261, Fax: 82-2-857-8580 E-mail: shbaek6534@korea.ac.kr

Received 24 August 2017 Revised 13 November 2017 Accepted 20 January 2018

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 characterize the horizontal angular direction of lower eyelashes in different age groups of Korean patients.

Methods

Digital photographs of 122 patients were obtained and the patients were divided into three groups involving children 6–19 years of age, adults 20–64 years of age, and older adults 65–85 years of age. Lower eyelashes were divided into medial, central, and lateral portions. Each portion was subdivided into three parts and the average value of the three parts was obtained for each portion. Horizontal angular directions tangential to the baseline between the medial and lateral canthus were measured and the data were compared between different portions and groups.

Results

The mean horizontal angular directions of the lower eyelash in the medial portions were 142.4 ± 10.8° in children, 137.1 ± 13.8° in adults, and 120.4 ± 13.0° in older adults. There was a negative correlation with age (r = −0.56, p < 0.01). In central portions, the values were 62.8 ± 18.5°, 71.8 ± 14.5°, and 86.0 ± 10.5°, respectively; and in lateral portions they were 23.3 ± 13.7°,25.3 ± 9.3°, and 29.5 ± 8.1°. There were positive correlations with aging in the central and lateral portions (r = 0.42, p < 0.01; r = 0. 16, p = 0.04, respectively).

Conclusions

The mean horizontal angular direction of eye lashes decreases with age in the medial portion of the lower eyelid but increases in the central and lateral portions in Korean patients. This may be related to factors such as stretching of the eyelid and involutional horizontal eyelid laxity and orbicularis muscle changes.

Keywords: Age, Angle, Eyelid, Horizontal, Lower eyelash

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Figure 1.

Measurement of angle of cilia in 3 different areas. (A) Child. (B) Adult. (C) Senile group.

Figure 2.

Correlation of age with angle of cilia in different portions.(A) Medial, (B) central, and (C) lateral portions. ^* Simple linear regression test.

Table 1.

Demographics and measurements of angle of cilia

	Total (n = 244 eyes)	Child (n = 78 eyes)	Adult (n = 110 eyes)	Senile (n = 56 eyes)	p-value^*
Age (years)	35.8 ± 24.7 (6–83)	9.1 ± 2.6 (6–18)	36.7 ± 13.8 (20–64)	71.1 ± 5.2 (65–83)	<0.01
Angle of cilia
Medial	135.2 ± 14.4	142.4 ± 10.8	137.1 ± 13.8	120.4 ± 13.0	<0.01
	(101.2–167.4)	(110.4–161.6)	(104.3–167.4)	(101.2–155.1)
Central	72.4 ± 18.1	62.8 ± 18.5	71.8 ± 14.5	86.0 ± 10.5	<0.01
	(34.1–146.3)	(39.7–146.3)	(34.1–108.4)	(40.3–110.9)
Lateral	25.4 ± 10.7	23.3 ± 13.7	25.3 ± 9.3	29.5 ± 8.1	0.04
	(3.9–140.3)	(4.3–140.3)	(3.9–49.4)	(10.4–59.1)

Values are presented as mean ± SD (range) unless otherwise indicated. Child: age of 6 to 19 years; Adult: age of 20 to 59 years; Senile: age of 60 to 85 years.

^* Kruskal-Wallis test among child, adult, and senile groups.

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