The tendon width of lateral rectus muscle in predicting the effect of recession: is it just age-related artifact?

Cm, Yun; Sh, Kim

doi:10.1038/eye.2011.178

Cited by 11 publications

(6 citation statements)

References 9 publications

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“…This study was considered as part of a series of previous studies investigating useful indicators to predict surgical outcomes for IXT [ 6 , 7 ]. Several previous studies reported that various factors, including age at surgery, exotropia type, high AC/A ratio, and lateral incomitance could significantly influence postoperative outcomes [ 8 – 11 ].…”

Section: Discussionmentioning

confidence: 99%

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Correlation between the Limbus-Insertion Distance of the Lateral Rectus Muscle and Lateral Rectus Recession Surgery in Intermittent Exotropia

Lee

Park

et al. 2016

PLoS ONE

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The aim of this study was to investigate whether the limbus-insertion distance (LID) of the lateral rectus (LR) muscle can be a useful indicator for predicting the surgical effect of recession surgery in intermittent exotropia (IXT). Patients who underwent unilateral or bilateral LR recession for the basic type of IXT were included. The distance between the corneal limbus and the posterior edge of the insertion of LR muscle (limbus-insertion distance) was measured intraoperatively using surgical calipers (graded with 0.25 mm precision). We calculated the actual dose-response effect as the difference between the angle of preoperative deviation and the angle of postoperative deviation, and then divided the figure by the total amount of recession at postoperative months 1, 3, and 6. The correlation between the limbus-insertion distance (LID) of LR muscle and each dose-response effect was statistically analyzed. A total of 60 subjects were enrolled in this study. The mean LID of LR muscle was 5.8±0.7 mm. The dose-response effect was 3.2±1.0 prism diopters (PD)/mm at postoperative month 1, 3.4±1.0 PD/mm at postoperative month 3, and 3.4±1.1 PD/mm at postoperative month 6. The LID of the LR muscle was significantly correlated with dose-response effects in cases of unilateral and bilateral LR recession at postoperative months 3 and 6 (P = 0.01, <0.01, 0.04 and <0.01 respectively). As the LID of the LR muscle increased by 1 mm, the dose-response effect increased by 0.2PD/mm in unilateral LR recession, and by 0.4 PD/mm in bilateral LR recession at postoperative month 6. In conclusion, the LID of the LR muscle can be used as one predictor of the recession effect to assist in surgical planning for IXT. Moreover, undercorrection at the time of LR recession might be considered in patients with long LID of the LR muscle.

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Section: Discussionmentioning

confidence: 99%

“…This finding suggested that these two parameters are useful predictive factors of postoperative outcomes in IXT. Another study, however, suggested that the tendon width could have an effect on the outcome of recession surgery in IXT [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Correlation between the Limbus-Insertion Distance of the Lateral Rectus Muscle and Lateral Rectus Recession Surgery in Intermittent Exotropia

Lee

Park

et al. 2016

PLoS ONE

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“…18 The width of the extraocular tendon of the LRM was reported to be an indicator for assessing the impact of the recession of the lateral rectus on intermittent exotropia. [33][34][35] We did not found any correlation between LRM (p=0.33) and MRM (p=0.17) tendon width with a successful surgery outcome. However, a correlation was noticed between MRM and LRM insertion with a successful outcome in exotropia cases.…”

Section: Discussionmentioning

confidence: 53%

Extraocular muscle resection, recession length and surgery outcome modelling in strabismus treatment: a pilot study

et al. 2021

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BackgroundMany surgical formulas have been developed and proposed based on the experience of surgeons to improve the predictability of strabismus surgery. However, the consent among strabismus surgeons regarding the dose effect of the extraocular muscle (EOM) recession or resection was not achieved yet and the disagreement about the appropriate amount of strabismus surgery still exists.ObjectiveOur study aimed to propose an instrument for EOM resection (RsL) and recession length (RcL) estimation before the surgery and second to elaborate an postoperative angle of deviation (PAD) predictive model using simple potential predictors.Methods and AnalysisThe analytical prospective clinical study was conducted from April 2016 to July 2019, on a sample of 216 patients (aged between 2–58) with concomitant strabismus who underwent strabismus surgery in Clinical Republican Hospital ‘Timofei Mosneaga’and Children Hospital ‘Em Cotaga’ from Republic of Moldova. The correlations of patients’ age, strabismus type, amblyopia degree, RsL, RcL, preoperative angle of deviation (PreAD) with PAD were estimated using Pearson’s correlation analysis. Multiple linear regression analysis, multicollinearity analysis and residual analysis were performed.ResultsThe EOM RsL was predicted using strabismus type, patient’s age, PreAD and EOM RcL. EOM RcL, in turn, was estimated by the similar covariates set, instead of RcL being RsL. PAD modelling showed the PreAD, EOM RsL and EOM RcL predictive ability for strabismus surgery outcome prediction.ConclusionIn our study, we propose four mathematical models as potential instruments for EOM RsL, EOM RcL and PAD modelling in esotropia and exotropia surgery.

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“…Currently, the observed associations between the insertion width and age are controversial. The insertion width of the MR has been reported to be smaller in patients with intermittent exotropia who are under 5 years old, 35 with no significant differences noted after reaching the age of 18 years and older. 27 However, Niyaz et al reported that there was no correlation between the insertion width of the extraocular muscles and age.…”

Section: Discussionmentioning

confidence: 95%

Conformation of Horizontal Extraocular Muscle Insertions in Acute Acquired Concomitant Esotropia Induced by Excessive Digital Device Usage

Hayashi,

Nishimura

et al. 2024

OPTH

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Purpose Acute acquired concomitant esotropia induced by excessive digital device usage, especially smartphones (SAACE), has been increasing over the past few years. Convergence spasm induced by excessive near work has been suggested as a mechanism. Anatomical differences could also potentially contribute to SAACE onset. The present study investigated the conformation of horizontal recti between SAACE patients and normal subjects. Patients and Methods In 15 SAACE patients (SAACE group), the distances between the limbus and insertion of the horizontal recti (LI distance) and the widths of horizontal recti on the insertion (insertion width) were measured. The control group consisted of 30 patients who underwent retinal detachment surgery. Differences in LI distances and insertion widths were compared between SAACE and control groups. Results While there were no differences between the two groups for LI distances and insertion widths of lateral recti, there were significantly shorter LI distances for the medial recti in the SAACE group ( P <0.05). Moreover, the SAACE group tended to exhibit larger insertion widths of the medial recti. Medial/lateral ratio of LI distances were significantly lower and insertion widths were significantly higher in the SAACE compared to the control group ( P <0.05). Conclusion Based on the observations of more anterior insertion and larger muscle widths, this suggests there are stronger forces of medial recti in SAACE. In addition to excessive accommodation followed by increases in medial recti tonus, the results also suggest that an anatomical imbalance between lateral and medial recti contributes to esotropia onset following excessive near work.

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The tendon width of lateral rectus muscle in predicting the effect of recession: is it just age-related artifact?

Cited by 11 publications

References 9 publications

Correlation between the Limbus-Insertion Distance of the Lateral Rectus Muscle and Lateral Rectus Recession Surgery in Intermittent Exotropia

Correlation between the Limbus-Insertion Distance of the Lateral Rectus Muscle and Lateral Rectus Recession Surgery in Intermittent Exotropia

Extraocular muscle resection, recession length and surgery outcome modelling in strabismus treatment: a pilot study

Conformation of Horizontal Extraocular Muscle Insertions in Acute Acquired Concomitant Esotropia Induced by Excessive Digital Device Usage

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