Changes in conjunctival–scleral thickness after strabismus surgery measured with anterior segment optical coherence tomography

Suzuki, Hiroyoshi; Hikoya, Akiko; Komori, Miwa; Inagaki, Risako; Haseoka, Takashi; Arai, Shinji; Takagi, Yuri; Hotta, Yoshihiro; Sato, M.

doi:10.1007/s10384-018-0609-2

Cited by 9 publications

(4 citation statements)

References 11 publications

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“…In contrast, the preoperative scleral thickness of 617 μm measured 3 mm from the limbus in the present study was higher than that of a previous report, likely because the sclera under the muscle insertion site was thin 20 . Furthermore, changes in conjunctival-scleral thickness 3–5 months after strabismus surgery were recently reported 21 . Although this study did not separate CTT and scleral thickness, the combination of the conjunctiva and sclera tended to become thinner in the recession side and thicker in the resection side after strabismus surgery.…”

Section: Discussionmentioning

confidence: 97%

One-Year Outcome Predictors of Strabismus Surgery from Anterior Segment Optical Coherence Tomography with Multiple B-Scan Averaging

Miyata

Suda

Uji

et al. 2019

Sci Rep

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Strabismologists are eager to identify preoperative or intraoperative strabismus surgery outcome predictors because of the variable effects in each patient. Conjunctival closure position recession after rectus muscle recession is effective for correcting large angle strabismus. The elasticity of the conjunctiva and Tenon’s capsule is important for strabismus surgery management. In this longitudinal study, we evaluated the prognosis of conjunctiva and Tenon’s capsule thickness (CTT) near the limbus 1 year after strabismus surgery with a limbal conjunctival incision using swept-source anterior segment optical coherence tomography with multiple B-scan averaging. Also, we identified preoperative and/or intraoperative parameters associated with corrective effects 1 year after surgery in 15 consecutive treatment-naïve patients with exotropia or esotropia who underwent recession and resection. The 1-year CTT was greater than the preoperative CTT on the resection side (269 ± 111 vs 183 ± 53 μm, P < 0.001) but was smaller on the recession side (137 ± 54 vs 183 ± 71 μm, P = 0.02). The corrective effect of surgery (1.6 ± 0.3°/mm) was most strongly correlated with preoperative CTT on the recession side ( P = 0.005, β = −0.73). Hence, CTT on the recession side may provide adjunctive information for strabismus treatment.

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Section: Discussionmentioning

confidence: 97%

One-Year Outcome Predictors of Strabismus Surgery from Anterior Segment Optical Coherence Tomography with Multiple B-Scan Averaging

Miyata

Suda

Uji

et al. 2019

Sci Rep

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“…AS-OCT measurements were taken 6 mm posterior to the limbus in the superior, inferior, nasal, and temporal directions to assess ST. According to Suzuki et al, the four straight muscles are adjacent to the sclera and appear as low-reflectance lines 12 . The scleral anterior border was determined by the boundary between the low-reflectance straight muscles (superior rectus, inferior rectus, medial rectus, lateral rectus) and the high-reflectance sclera, while the scleral posterior border was determined by the signal from the choroid (Fig.…”

Section: Methodsmentioning

confidence: 99%

The measurement and correlation analysis of scleral and choroid thickness in branch retinal vein occlusion

Yu,

Zou,

Mao

et al. 2024

Sci Rep

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To use Optical Coherence Tomography (OCT) to measure scleral thickness (ST) and subfoveal choroid thickness (SFCT) in patients with Branch Retinal Vein Occlusion (BRVO) and to conduct a correlation analysis. A cross-sectional study was conducted. From May 2022 to December 2022, a total of 34 cases (68 eyes) of untreated unilateral Branch Retinal Vein Occlusion (BRVO) patients were recruited at the Affiliated Eye Hospital of Nanchang University. Among these cases, 31 were temporal branch vein occlusions, 2 were nasal branch occlusions, and 1 was a superior branch occlusion. Additionally, 39 cases (39 eyes) of gender- and age-matched control eyes were included in the study. Anterior Segment Optical Coherence Tomography (AS-OCT) was used to measure ST at 6 mm superior, inferior, nasal, and temporal to the limbus, while Enhanced Depth Imaging Optical Coherence Tomography (EDI-OCT) was used to measure SFCT. The differences in ST and SFCT between the affected eye, contralateral eye, and control eye of BRVO patients were compared and analyzed for correlation. The axial lengths of the BRVO-affected eye, contralateral eye, and control group were (22.92 ± 0.30) mm, (22.89 ± 0.32) mm and (22.90 ± 0.28) mm respectively, with no significant difference in axial length between the affected eye and contralateral eye (P > 0.05). The SFCT and ST measurements in different areas showed significant differences between the BRVO-affected eye, contralateral eye in BRVO patients (P < 0.05). The CRT of BRVO-affected eyes was significantly higher than that of the contralateral eyes and the control eyes (P < 0.001). In comparison between BRVO-affected eyes and control eyes, there were no statistically significant differences in age and axial length between the two groups (P > 0.05). However, significant differences were observed in SFCT and temporal, nasal, superior, and inferior ST between the two groups (P < 0.05). The difference in temporal ST between the contralateral eyes and the control eyes was not statistically significant (t = − 0.35, P = 0.73). However, the contralateral group showed statistically significant increases in SFCT, nasal, superior and inferior ST compared to control eyes (t = − 3.153, 3.27, 4.21, 4.79, P = 0.002, 0.002, < 0.001, < 0.001). However, the difference between the CRT of the contralateral and control eyes was not statistically significant (P = 0.421). When comparing SFCT and ST between BRVO-affected eyes with and without macular edema, no statistically significant differences were found (t = − 1.10, 0.45, − 1.30, − 0.30, 1.00; P = 0.28, 0.66, 0.21, 0.77, 0.33). The thickness of SFCT and temporal ST in major BRVO group is higher than the macular BRVO group and the difference was statistically significant (t = 6.39, 7.17, P < 0.001 for all). Pearson correlation analysis revealed that in BRVO patients, there was a significant positive correlation between SFCT/CRT and temporal ST (r = 0.288, 0.355, P = 0.049, 0.04). However, there was no correlation between SFCT/CRT and nasal ST, superior ST, and inferior ST (P > 0.05). In BRVO patients, both SFCT/CRT and ST increase, and there is a significant correlation between SFCT/CRT and the ST at the site of vascular occlusion.

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“…AS-OCT measurements were taken 6mm posterior to the limbus in the superior, inferior, nasal, and temporal directions to assess ST. According to Suzuki et al, the four straight muscles are adjacent to the sclera and appear as lowre ectance lines [12] . The scleral anterior border was determined by the boundary between the lowre ectance straight muscles (superior rectus, inferior rectus, medial rectus, lateral rectus) and the highre ectance sclera, while the scleral posterior border was determined by the signal from the choroid(Fig.…”

Section: Imaging Examinationsmentioning

confidence: 99%

The measurement and correlation analysis of scleral and choroid thickness in branch retinal vein occlusion

Yu,

Zou,

Mao

et al. 2024

Preprint

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Objective: To use Optical Coherence Tomography (OCT) to measure scleral thickness (ST) and subfoveal choroid thickness (SFCT) in patients with Branch Retinal Vein Occlusion (BRVO) and to conduct a correlation analysis. Methods: A cross-sectional study was conducted. From May 2022 to December 2022, a total of 34 cases (68 eyes) of untreated unilateral Branch Retinal Vein Occlusion (BRVO) patients were recruited at the Affiliated Eye Hospital of Nanchang University. Among these cases, 31 were temporal branch vein occlusions, 2 were nasal branch occlusions, and 1 was a superior branch occlusion. Additionally, 39 cases (39 eyes) of gender- and age-matched control eyes were included in the study. Anterior Segment Optical Coherence Tomography (AS-OCT) was used to measure ST at 6mm above, below, nasal, and temporal to the limbus, while Enhanced Depth Imaging Optical Coherence Tomography (EDI-OCT) was used to measure SFCT. The differences in ST and SFCT between the affected eye, contralateral eye, and control eye of BRVO patients were compared and analyzed for correlation. Results: The axial lengths of the affected eye, contralateral eye, and control group were (22.92±0.30) mm, (22.89±0.32) mm and (22.90±0.28) mm respectively, with no significant difference in axial length between the affected eye and contralateral eye (P>0.05). The SFCT and ST measurements in different areas showed significant differences between the affected eye, contralateral eye in BRVO patients (P<0.05). In comparison between BRVO-affected eyes and control eyes, there were no statistically significant differences in age and axial length between the two groups (P>0.05). However, significant differences were observed in SFCT and temporal, nasal, superior, and inferior ST between the two groups (P<0.05). When comparing SFCT and ST between BRVO-affected eyes with and without macular edema, no statistically significant differences were found (t=-1.10, 0.45, -1.30, -0.30, 1.00; P=0.28, 0.66, 0.21, 0.77, 0.33). Correlation analysis indicated a significant positive correlation between SFCT and temporal ST in BRVO patients (r=0.288, P=0.049), while no correlation was found between SFCT and nasal, superior, and inferior ST (P>0.05). Conclusion: In BRVO patients, both SFCT and ST increase, and there is a significant correlation between SFCT and the ST at the site of vascular occlusion.

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Changes in conjunctival–scleral thickness after strabismus surgery measured with anterior segment optical coherence tomography

Abstract: Conjunctival-scleral thicknesses showed various changes after recession and resection or plication. These findings may help detect previous surgical operations when conjunctival scarring and ciliary vessel changes are unclear.

Cited by 9 publications

References 11 publications

One-Year Outcome Predictors of Strabismus Surgery from Anterior Segment Optical Coherence Tomography with Multiple B-Scan Averaging

One-Year Outcome Predictors of Strabismus Surgery from Anterior Segment Optical Coherence Tomography with Multiple B-Scan Averaging

The measurement and correlation analysis of scleral and choroid thickness in branch retinal vein occlusion

The measurement and correlation analysis of scleral and choroid thickness in branch retinal vein occlusion

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