Refractive effect of the horizontal rectus muscle recession

Rajavi, Zhale; Mohammad-Rabei, Hossein; Ramezani, Alireza; Heidari, Alireza; Daneshvar, Faride

doi:10.1007/s10792-007-9116-z

Cited by 27 publications

(45 citation statements)

References 7 publications

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“…Hong and Kang [5] also reported that small statistical astigmatic changes did not seem to be clinically important. In our study, cylinder power and axis of induced astigmatism showed statistically significant differences compared with the preoperative values, but these astigmatic changes did not affect vision changes in either group, in agreement with the previous studies [527]. …”

Section: Discussionsupporting

confidence: 93%

“…No statistically significant difference was found between preoperative and postoperative BCVA (logMAR) either in group 1 or group 2 (all p > 0.05 in both groups), and there was also no inter-group difference (all p > 0.05). Rajavi et al [27] reported that LR recession induced significant change only in the astigmatic axis toward with-the-rule astigmatism, and not in astigmatic power or SE at 1 month or 3 months after surgery. Although the authors did not directly evaluate preoperative or postoperative visual acuity, they reported that shift of axis would not be practically notable, considering insignificant alteration in astigmatic power.…”

Section: Discussionmentioning

confidence: 99%

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Comparison of Astigmatism Induced by Combined Inferior Oblique Anterior Transposition Procedure and Lateral Rectus Recession Alone

Eum

Chun

2016

Korean J Ophthalmol

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PurposeThe purpose of this study is to compare the magnitude and axis of astigmatism induced by a combined inferior oblique (IO) anterior transposition procedure with lateral rectus (LR) recession versus LR recession alone.MethodsForty-six patients were retrospectively analyzed. The subjects were divided into two groups: those having concurrent inferior oblique muscle overaction (IOOA) and intermittent exotropia (group 1, 20 patients) and those having only intermittent exotropia as a control (group 2, 26 patients). Group 1 underwent combined anterior transposition of IO with LR recession and group 2 underwent LR recession alone. Induced astigmatism was defined as the difference between preoperative and postoperative astigmatism using double-angle vector analysis. Cylinder power, axis of induced astigmatism, and spherical equivalent were analyzed at 1 week, 1 month, and 3 months after surgery.ResultsLarger changes in the axis of induced astigmatism were observed in group 1, with 4.5° incyclotorsion, than in group 2 at 1 week after surgery (axis, 84.5° vs. 91°; p < 0.001). However, there was no statistically significant inter-group difference thereafter. Relaxation and rapid regression in the incyclotorsion of induced astigmatism were observed over-time. Spherical equivalent significantly decreased postoperatively at 1 month in both groups, indicating a myopic shift (p = 0.011 for group 1 and p = 0.019 for group 2) but did not show significant differences at 3 months after surgery (p = 0.107 for group 1 and p = 0.760 for group 2).ConclusionsCombined IO anterior transposition procedures caused an increased change in the axis of induced astigmatism, including temporary incyclotorsion, during the first week after surgery. However, this significant difference was not maintained thereafter. Thus, combined IO surgery with LR recession does not seem to produce a sustained astigmatic change, which can be a potential risk factor of postoperative amblyopia or diplopia compared with LR recession alone.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Comparison of Astigmatism Induced by Combined Inferior Oblique Anterior Transposition Procedure and Lateral Rectus Recession Alone

Eum

Chun

2016

Korean J Ophthalmol

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“…When Seo and colleagues [23] analyzed corneal topography, they found a significant increase in higher order aberrations (including quatrefoil, pentafoil, secondary coma, secondary trefoil, and secondary astigmatism) at postoperative week 1, which resolved within 1 month postoperatively. The significant increase in WTR astigmatism Bagheri et al [12] found after 4-muscle recession persisted when evaluated 6-8 weeks postoperatively. The myopic shift and astigmatic changes earlier…”

Section: Transience Versus Permanencementioning

confidence: 82%

“…Noh et al [17] found a significant increase in WTR astigmatism associated with BLR recession (0.30 AE 0.46, P ¼ 0.005.). When looking at 4-muscle recession in patients with nystagmus, Bagheri et al [12] found a significant increase in WTR astigmatism (þ0.70 AE 0.80 D, P < 0.0002). Hong and Kang [13] used power vector analysis, a method which accounts for both physical and optical properties affecting refraction, to show that WTR astigmatism increased for 3 months postoperatively and was sustained for 6 months of postoperative follow-up.…”

Section: Change In Astigmatismmentioning

confidence: 99%

Refractive changes after strabismus surgery

LaMattina

DeBenedictis²

2016

Current Opinion in Ophthalmology

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“…Furthermore, the effect of strabismus surgery on astigmatism is also debatable. Some reported that recession of a single rectus muscle was associated with an increase in power in the meridian of the recessed muscle [2], whereas others reported a decrease in the power of this meridian [5-7,10,11]. Part of these discrepancies may be caused by methodological difficulties in representing refractive power changes.…”

mentioning

confidence: 99%

Astigmatic Changes after Horizontal Rectus Muscle Surgery in Intermittent Exotropia

Hong

Kang

2012

Korean J Ophthalmol

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PurposeTo evaluate the changes of refractive astigmatism after horizontal rectus muscle surgery in intermittent exotropic children.MethodsSixty-nine exotropic patients were retrospectively reviewed. Of those, 35 patients received unilateral lateral rectus recession (BLR group, 35 eyes) and 34 patients received unilateral lateral rectus recession and medial rectus resection (R&R group, 34 eyes). Non-cycloplegic refractions were measured until 6 months postoperatively. Spherical equivalent (SE), J0 and J45 using power vectors were calculated to determine and compare the changes of refractive astigmatism and axis in both groups.ResultsSE significantly decreased after surgery for the first week and did not changed thereafter in both groups (p = 0.000 and p = 0.018, respectively). In BLR group, J0 showed significant changes at the first week and 1 month after surgery (p = 0.005 and p = 0.016, respectively), but in R&R group, J0 changed significantly between 1 week and 3 months postoperatively (p = 0.023 and p = 0.016, respectively). J45 did not change significantly as time passed in both groups (all p > 0.05). There was no statistically significant difference in the magnitude of changes in SE, J0 and J45 between the two groups after the 6-month follow-up (p = 0.500, p = 0.244 and p = 0.202, respectively).ConclusionsHorizontal rectus muscle surgery in intermittent exotropic children tends to induce a statistically significant change in astigmatism in the with-the-rule direction and myopic shift in SE. This astigmatism change seems to occur within the first 3 months after surgery. Thus, astigmatism induced by surgery should be checked and corrected at least 3 months after horizontal strabismus surgery.

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Refractive effect of the horizontal rectus muscle recession

Cited by 27 publications

References 7 publications

Comparison of Astigmatism Induced by Combined Inferior Oblique Anterior Transposition Procedure and Lateral Rectus Recession Alone

Comparison of Astigmatism Induced by Combined Inferior Oblique Anterior Transposition Procedure and Lateral Rectus Recession Alone

Refractive changes after strabismus surgery

Astigmatic Changes after Horizontal Rectus Muscle Surgery in Intermittent Exotropia

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