A Comparison of Lower Eyelid Retraction in Normal Individuals With Positive Versus Negative Orbital Vector

A Comparison of Lower Eyelid Retraction in Normal Individuals With Positive Versus Negative Orbital Vector Publisher Pubmed

Rajabi M¹ ; Malmir M¹ ; Mahmoudzadeh R¹ ; Salabati M¹ ; Tabatabaie S¹ ; Rajabi MB¹ ; Hosseini S¹

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1. Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Qazvin Square, Tehran, Iran

Source: Middle East African Journal of Ophthalmology Published:2020

Abstract

PURPOSE: The present study aimed to compare lower eyelid retraction (LER) in individuals with a positive orbital vector with that of individuals with a negative orbital vector. MATERIALS AND METHODS: This cross-sectional study was conducted on 123 normal individuals including 64 men and 59 women aged 20-80 years. After the individuals underwent Hertel exophthalmometry, two side-view and front-view photos were taken using a camera. The orbital vector angle and the extent of scleral show were then measured in millimeter, using the Photoshop software. Eventually, the recorded data were analyzed through statistical software. RESULTS: The findings of this study showed that LER has a significant correlation with orbital vector angle and the extent of proptosis (P < 0.05). The mean value of orbital vector angle in individuals without LER was 9.76°, while this figure was calculated to be - 13.65° in individuals with LER. The mean protrusion value based on Hertel exophthalmometry was 14.08 mm in individuals without LER and 16.27 mm in individuals with LER. The extent of scleral show had a significant correlation with proptosis and orbital vector angle (P = 0.01), with a mean value of - 0.41 mm in individuals without LER and 0.94 mm in participants with LER. CONCLUSIONS: The prevalence of LER and scleral show is positively correlated with the extent of proptosis and negatively correlated with orbital vector angle. © 2020 Middle East African Journal of Ophthalmology | Published by Wolters Kluwer - Medknow.

Style	Citing Format
MLA	Rajabi M, et al.. "A Comparison of Lower Eyelid Retraction in Normal Individuals With Positive Versus Negative Orbital Vector." Middle East African Journal of Ophthalmology, vol. 27, no. 1, 2020, pp. 22-27.
APA	Rajabi M, Malmir M, Mahmoudzadeh R, Salabati M, Tabatabaie S, Rajabi MB, Hosseini S (2020). A Comparison of Lower Eyelid Retraction in Normal Individuals With Positive Versus Negative Orbital Vector. Middle East African Journal of Ophthalmology, 27(1), 22-27.
Chicago	Rajabi M, Malmir M, Mahmoudzadeh R, Salabati M, Tabatabaie S, Rajabi MB, Hosseini S. "A Comparison of Lower Eyelid Retraction in Normal Individuals With Positive Versus Negative Orbital Vector." Middle East African Journal of Ophthalmology 27, no. 1 (2020): 22-27.
Harvard	Rajabi M et al. (2020) 'A Comparison of Lower Eyelid Retraction in Normal Individuals With Positive Versus Negative Orbital Vector', Middle East African Journal of Ophthalmology, 27(1), pp. 22-27.
Vancouver	Rajabi M, Malmir M, Mahmoudzadeh R, Salabati M, Tabatabaie S, Rajabi MB, et al.. A Comparison of Lower Eyelid Retraction in Normal Individuals With Positive Versus Negative Orbital Vector. Middle East African Journal of Ophthalmology. 2020;27(1):22-27.
BibTex	@article{ author = {Rajabi M and Malmir M and Mahmoudzadeh R and Salabati M and Tabatabaie S and Rajabi MB and Hosseini S}, title = {A Comparison of Lower Eyelid Retraction in Normal Individuals With Positive Versus Negative Orbital Vector}, journal = {Middle East African Journal of Ophthalmology}, volume = {27}, number = {1}, pages = {22-27}, year = {2020} }
RIS	TY - JOUR AU - Rajabi M AU - Malmir M AU - Mahmoudzadeh R AU - Salabati M AU - Tabatabaie S AU - Rajabi MB AU - Hosseini S TI - A Comparison of Lower Eyelid Retraction in Normal Individuals With Positive Versus Negative Orbital Vector JO - Middle East African Journal of Ophthalmology VL - 27 IS - 1 SP - 22 EP - 27 PY - 2020 ER -

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