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Journal of Ophthalmology & Visual Neuroscience

Aabstract


Research Article

Correlation between Ciliary Muscle Thickness and Myopia in Saudi Females using Visante Anterior Segment Optical Coherence Tomography

Amira El-Agamy, Nusayba Al-Najjar, Mohamed Berika

Correspondence Address :

Amira Elagamy
Assistant Professor of Ophthalmology
Department of Optometry and Vision Sciences
College of Applied Medical Sciences
King Saud University, Saudi Arabia and Mansoura Ophthalmic Center, Faculty of Medicine
Mansoura University, Egypt
Email: aelagamy@ksu.edu.sa

Received on: April 03, 2018, Accepted on: April 10, 2018, Published on: April 18, 2018

Citation: Amira El-Agamy, Nusayba Al-Najjar, Mohamed Berika (2018). Correlation between Ciliary Muscle Thickness and Myopia in Saudi Females using Visante Anterior Segment Optical Coherence Tomography

Copyright: 2018 Amira Elagamy, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

  • Abstract

Abstract
Purpose: This study was conducted to evaluate the correlation between ciliary muscle thickness and myopia in Saudi females using anterior segment optical coherence tomography (AS-OCT).
Subjects and Methods: This study was a prospective, non-randomized, crosssectional, observational, and quantitative study. The study included 65 eyes (33 myopic eyes and 32 non-myopic eyes). All subjects underwent a complete ophthalmic examination, measurement of the refractive error, central corneal curvature (CCC), axial length (AL) and anterior chamber depth (ACD). Ciliary muscle thickness (CMT) at 1 mm, 2mm and 3mm (from the scleral spur) was measured using AS-OCT (Visante; Carl Zeiss).
Results: Concerning comparison between myopic and non-myopic eyes, there was a statistically significant difference in temporal CMT (TCMT2, TCMT3) (P<0.05). Alternatively, there was no statistically significant difference in TCMT1 (P=0.54). On the other hand, there was a statistically significant difference in nasal CMT (NCMT3) (P=0.001). Though, there was no statistically significant difference in NCMT1, NCMT2 (P>0.05). The myopic eyes showed a statistically insignificant positive correlation between AL and all measures of CMT except for CMT1. In addition, there was a statistically insignificant positive correlation between mean spherical error (MSE) and most measures of CMT. Furthermore, there was a statistically insignificant negative correlation between CCC and CMT. Additionally, there was a statistically insignificant positive correlation between ACD and all measures of CMT.
Conclusion: This study documented increased CMT in myopic eyes. Future studies are recommended to evaluate structural characteristics of the ciliary muscle in the context of 3-D morphological features of the globe that are better indicators of architectural changes that occur in myopia.

Keywords: Ciliary muscle thickness, Myopia, Axial length, Mean spherical error, Anterior segment optical coherence tomography