Validity and Reliability of Semiautomatic Ocular Cycloposition Measurement With Spectralis Optical Coherence Tomography

Piedrahita-Alonso, Elena; Valverde-Megías, A.; Gómez-de-Liaño, R.

doi:10.1016/j.ajo.2020.09.005

Cited by 6 publications

(4 citation statements)

References 30 publications

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“…Nonetheless, certain limitations persist. Similar to a preceding study [ 35 ], the sample size in this investigation is limited. However, the breadth of indicators evaluated, encompassing as many as 15 distinct indicators, potentially mitigates the instability in results that a smaller sample size might induce.…”

Section: Discussionmentioning

confidence: 98%

Evaluating imaging repeatability of fully self-service fundus photography within a community-based eye disease screening setting

Zhang,

Luo,

et al. 2024

BioMed Eng OnLine

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Purpose This study aimed to investigate the imaging repeatability of self-service fundus photography compared to traditional fundus photography performed by experienced operators. Design Prospective cross-sectional study. Methods In a community-based eye diseases screening site, we recruited 65 eyes (65 participants) from the resident population of Shanghai, China. All participants were devoid of cataract or any other conditions that could potentially compromise the quality of fundus imaging. Participants were categorized into fully self-service fundus photography or traditional fundus photography group. Image quantitative analysis software was used to extract clinically relevant indicators from the fundus images. Finally, a statistical analysis was performed to depict the imaging repeatability of fully self-service fundus photography. Results There was no statistical difference in the absolute differences, or the extents of variation of the indicators between the two groups. The extents of variation of all the measurement indicators, with the exception of the optic cup area, were below 10% in both groups. The Bland–Altman plots and multivariate analysis results were consistent with results mentioned above. Conclusions The image repeatability of fully self-service fundus photography is comparable to that of traditional fundus photography performed by professionals, demonstrating promise in large-scale eye disease screening programs.

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Section: Discussionmentioning

confidence: 98%

Evaluating imaging repeatability of fully self-service fundus photography within a community-based eye disease screening setting

Zhang,

Luo,

et al. 2024

BioMed Eng OnLine

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“…By convention, the DFA is positive when the fovea is below the optic disc centre and negative when it is above. Investigations on cycloposition in healthy eyes described a mean value from 5.1° to 7.9° 4,9–11 and an estimated normality range from 0° to 13°; equivalent to the range described by Bixenman and von Noorden 1 . DFA can be measured by fundus photography software 4,6,9,10,12 or more recently with optical coherence tomography, 11,13,14 with the former method remaining the most frequently used.…”

Section: Introductionmentioning

confidence: 98%

Minimal detectable change of the disc‐fovea angle for ocular torsion assessment

Piedrahita-Alonso

Valverde-Megías

Martín-García

et al. 2021

Ophthalmic Physiologic Optic

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Purpose The disc‐fovea angle (DFA) is used as a relevant indicator of ocular torsion change in cyclovertical strabismus. However, interpretation of the variation in time must differentiate whether a real change has occurred or if the disparity is due to random measurement error. The aim of the study was to obtain the minimal detectable change (MDC) of the DFA. It represents the minimal variation between two measurements that may be considered a real ocular torsion change. Methods A prospective cross‐sectional study was conducted in San Carlos Clinical Hospital of Madrid, Spain. Sixty healthy right eyes from 60 patients (31 men and 29 women) were recruited. Three digital fundus photographs were obtained, and between measurements, the patient moved their head away from the head support and then returned. Two observers quantified the DFA with software designed with MATLAB. Test‐retest and interrater reliability were calculated. Results Mean participant age was 56.1 years (SD 16.6, range 25–85). Mean DFA was 8.1° (SD 3.5, range 1.3–18.5). Test‐retest reliability for Observer 1 (Ob1), Observer 2 (Ob2) and interrater reliability were excellent (ICC 0.80, 0.83 and 0.95, respectively). Precision was 2.9° (Ob1) and 3.0° (Ob2), and the MDC95 was 4.1° (Ob1) and 4.2° (Ob2). Bland‐Altman analysis revealed an absence of bias and a homoscedastic distribution of the differences. Conclusions The MDC of the DFA in fundus photography was 4°, which represents the minimal change that may be considered a real change in ocular torsion. This result may improve the interpretation of ocular torsion changes in surgery and clinical scenarios.

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“…The assessment of torsional, horizontal and vertical eye movements provides comprehensive information regarding anomalous ocular movements, which may impact the selection of surgical procedures 1,2 . Objective methods, including optical coherence tomography (OCT) and fundus photography, are available for assessing ocular torsion [3][4][5][6][7] .…”

mentioning

confidence: 99%

“…With the increasing use of OCT in clinical settings, numerous studies have assessed ocular torsion using OCT 4,[12][13][14] . In comparison to fundus photography, OCT exhibits superiority in the evaluation of ocular torsion owing to its high levels of efficiency, accuracy, and repeatability 3,4 . This study aims to assess objective ocular torsion in IXT patients using OCT and explore the impact of R&R on ocular torsion.…”

mentioning

confidence: 99%

The changes in ocular torsion after unilateral lateral rectus recession-medial rectus resection for intermittent exotropia

Liu,

Zhu

et al. 2024

Sci Rep

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We aim to explore the alterations of objective ocular torsion after unilateral lateral rectus recession-medial rectus resection (R&R) for intermittent exotropia (IXT). Seventy-two IXT patients undergoing R&R between March and June 2023 were enrolled. Ophthalmological examinations were performed before surgery and at 1 week and 1 month after surgery, mainly including prism and alternate cover test and optical coherence tomography. The mean disc-foveal angle of eyes showing intorsion significantly increased from − 1.5 ± 0.9° preoperatively to 2.0 ± 2.0° at 1 week (P = 0.0227) and 2.2 ± 1.6° at 1 month postoperatively (P = 0.0054). The mean disc-foveal angle of eyes exhibiting extorsion significantly reduced from 12.8 ± 1.9° preoperatively to 9.8 ± 3.1° at 1 week (P < 0.0001) and 9.7 ± 2.7° at 1 month postoperatively (P < 0.0001). The improvement of ocular extorsion at postoperative 1 month was more pronounced in patients with extorsion in operative eye compared to those with extorsion in inoperative eye (P = 0.0101). The improvement of ocular torsion was observed following R&R for IXT, with a greater effect noted in cases where the surgery was performed on the eye exhibiting extorsion.

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Validity and Reliability of Semiautomatic Ocular Cycloposition Measurement With Spectralis Optical Coherence Tomography

Cited by 6 publications

References 30 publications

Evaluating imaging repeatability of fully self-service fundus photography within a community-based eye disease screening setting

Evaluating imaging repeatability of fully self-service fundus photography within a community-based eye disease screening setting

Minimal detectable change of the disc‐fovea angle for ocular torsion assessment

The changes in ocular torsion after unilateral lateral rectus recession-medial rectus resection for intermittent exotropia

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