Spectral domain optical coherence tomography to assess the insertion of extraocular rectus muscles

De‐Pablo‐Gómez‐de‐Liaño, Lucía; Fernández‐Vigo, José Ignacio; Ventura-Abreu, Néstor; Morales-Fernández, Laura; Fernández-Pérez, Cristina; García‐Feijoó, Julián; Gómez-de-Liaño, R.

doi:10.1016/j.jaapos.2016.02.011

Cited by 24 publications

(16 citation statements)

References 17 publications

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“…While previous studies investigated EOM parameters (especially muscle insertion distance and thickness) using instruments such as Vernier callipers, ultrasound B-scan, magnetic resonance imaging and optical coherence tomography (OCT), these either estimated the distances in cadaveric eyes or did not involve humans with varying degrees of myopia. [19][20][21][22][23][24][25][26][27][28] The paucity in the literature in exploring the association of medial (MR) and lateral rectus (LR) muscle parameters with varying degrees of myopia warrants investigation to understand this relationship, especially considering that the biomechanical properties of the eye, similar to structural properties, may also differ between emmetropes and myopes. 24,25,27,29,30 With this background on the significant role of EOMs during convergence, and in turn the association of prolonged nearwork with myopia, it is of interest to explore whether the EOM parameters show any association with myopia akin to thinning/atrophy of various ocular structures with ocular stretching.…”

Section: Introductionmentioning

confidence: 99%

Do rectus muscle parameters vary between emmetropes and myopes?

Vasudeva

Dhakal

Vupparaboina

et al. 2021

Ophthalmic Physiologic Optic

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This study investigated the thickness, area, and insertion site of the medial (MR) and lateral (LR) rectus muscles in individuals with emmetropia and different degrees of myopia.Methods: Swept-source optical coherence tomography images of the MR and LR muscles in 80 participants including emmetropes (spherical equivalent refractive error [SER] ±0.50 D, N = 14) and myopes (≤ −0.75 D, N = 66), were analysed. Customdesigned, semi-automated software was used to measure parameters such as insertion distance from limbus, muscle thickness at every 1 mm interval to 3 mm periphery and muscle area from insertion site to 3 mm. How to cite this article: Vasudeva A, Dhakal R, Vupparaboina KK, Verkicharla PK. Do rectus muscle parameters vary between emmetropes and myopes?

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Section: Introductionmentioning

confidence: 99%

Do rectus muscle parameters vary between emmetropes and myopes?

Vasudeva

Dhakal

Vupparaboina

et al. 2021

Ophthalmic Physiologic Optic

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“…The mean distances obtained by OCT were higher than the distances conducted by De-Pablo-Gomez-de-Liano et al In their study they used SD-OCT, the mean LR insertion site was 6.47± 0.5 mm and MR mean insertion site was 5.22 ± 0.5 mm. 13 This discrepancy is probably because in our study and in Liu et al study as well as other studies 11 , 12 the distance was measured from the insertion site to the angle of anterior chamber, and then added 1.0 mm. However, in De Pablo-Gomez-de-liano, the distance was measured directly from the posterior limbus.…”

Section: Discussionmentioning

confidence: 63%

“…However, in De Pablo-Gomez-de-liano, the distance was measured directly from the posterior limbus. 13 …”

Section: Discussionmentioning

confidence: 99%

<p>Horizontal Extraocular Muscle Insertion Site in Relation to Axial Length Using Swept-Source Anterior Segment OCT</p>

El-Fayoumi

Bahgat

Khafagy

et al. 2020

OPTH

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Purpose The purpose of this study was to correlate between the axial length of the globe and the insertion site of horizontal extraocular muscles using swept-source anterior segment optical coherence tomography (SS-ASOCT), with posing an equation to calculate the muscle insertion site from the axial length. Methods The study design was observational and cross-sectional. It was performed on 157 eyes of 157 healthy subjects. The distance of the medial rectus (MR) and the lateral rectus (LR) insertion sites from the limbus were measured using SS-ASOCT. The insertion sites’ distances were correlated to the axial length (hypermetropes < 22.5 mm, myopes > 24.5). Correlation between numerical variables was done by Pearson’s correlation coefficient and confirmed by linear regression analysis and scatter diagrams. Results The mean MR insertion site was 5.47 ± 0.19 mm in hypermetropes versus 5.68 ± 0.23 mm in myopes, whereas the mean LR insertion site was 6.81± 0.23 mm in hyperopes versus 7.08 ± 0.16 mm in myopes. The axial length showed a moderate positive, but significant, correlation to the insertional position for the medial and lateral rectus muscles (MR: r =0.417, p<0.001; LR: r =0.410, p<0.001). Conclusion Comparing the horizontal extraocular muscle insertion site to axial length using SS-ASOCT showed a significant positive correlation. The model equation for MR insertion: MR (mm) = 4.522 + 0.045 (AXL in mm) with an R = 0.437, R 2 = 0.191, F=12.071, P<0.001. The model equation for LR insertion: LR (mm) = 5.72 + 0.048 (AXL in mm) with an R = 0.438, R 2 = 0.192, F=12.116, P<0.001.

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“…These studies used Visante (Carl Zeiss Meditec, Dublin, CA) to obtain the images, which is a TD-OCT system that has lower resolution than SD-OCT or SS-OCT systems. Regarding reproducibility, De-Pablo-Gómez-de-Liaño et al 8 showed high values in insertion distance measurements with SD-OCT.…”

Section: Introductionmentioning

confidence: 95%