Dataset Information

Shape analysis of rectus extraocular muscles with age and axial length using anterior segment optical coherence tomography.

ABSTRACT:

Purpose

This study aimed to evaluate the shape of the extraocular muscles (EOMs) in normal subjects using the en-face images of anterior segment optical coherence tomography (AS-OCT). The EOM insertion and the direction of the muscle fibers were investigated.

Subjects and methods

A total of 97 healthy normal subjects (194 eyes) at Okayama University Hospital (age, 47.1±21.5 years; range, 8-79 years) participated in the study. A series of 256 tomographic images of the rectus EOMs were captured using the C-scan function of the AS-OCT (CASIA2, TOMEY Co., Japan), and the images were converted to en-face images in multi-TIFF format. The anterior chamber angle to EOM insertion distance (AID) and the angle of the muscle fibers from the insertion site (angle of muscles) were measured from the images. The correlations of AID and angle of muscles with age and axial length were investigated and evaluated.

Results

AID and angle of muscles were significantly correlated with age or axial length in some EOMs. The AIDs of medial rectus (MR) (P = 0.000) and superior rectus (SR) (P = 0.005) shortened with age. The AIDs of MR (P = 0.001) and inferior rectus (IR) (P = 0.035) elongated with axial length, whereas lateral rectus (LR) (P = 0.013) shortened. The angles of MR (P = 0.001) and LR (P = 0.000) were found to have a more downward direction toward the posterior in older subjects.

Conclusion

En-face images can be created by AS-OCT, and the shape of the EOMs in normal subjects using these image measurements was available. With the ability to assess the EOMs, AID and angle of muscles are expected give useful information for treating and diagnosing strabismus-related diseases.

SUBMITTER: Shibata K

PROVIDER: S-EPMC7757803 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Publications

Shape analysis of rectus extraocular muscles with age and axial length using anterior segment optical coherence tomography.

Shibata Kiyo K Fujiwara Atsushi A Hamasaki Ichiro I Shimizu Takehiro T Kono Reika R Kanenaga Keisuke K Nakazawa Masanori M Morizane Yuki Y

PloS one 20201223 12

<h4>Purpose</h4>This study aimed to evaluate the shape of the extraocular muscles (EOMs) in normal subjects using the en-face images of anterior segment optical coherence tomography (AS-OCT). The EOM insertion and the direction of the muscle fibers were investigated.<h4>Subjects and methods</h4>A total of 97 healthy normal subjects (194 eyes) at Okayama University Hospital (age, 47.1±21.5 years; range, 8-79 years) participated in the study. A series of 256 tomographic images of the rectus EOMs w ...[more]

PMID: 33362229

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Dataset Information

Shape analysis of rectus extraocular muscles with age and axial length using anterior segment optical coherence tomography.

Purpose

Subjects and methods

Results

Conclusion

Publications

Shape analysis of rectus extraocular muscles with age and axial length using anterior segment optical coherence tomography.

Similar Datasets

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