Direct Measurement of the Ciliary Sulcus Diameter Using Optical Coherence Tomography-Inter-Rater Variability

The determination of sulcus-to-sulcus measurements has been challenging due to the limitations of current approaches. Ultrasound methods are highly operator-dependent and require extensive training, while traditional optical devices cannot visualize structures posterior to the iris. However, modern...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2024-10, Vol.24 (21), p.6950
Main Authors: Eppig, Timo, Seer, Manuel, Martinez-Abad, Antonio, Galvis, Virgilio, Schütz, Saskia, Tello, Alejandro, Rombach, Michiel C, Alió, Jorge L
Format: Article
Language:English
Subjects:
Aged
Cataract
Cataract Extraction
Cataracts
Ciliary Body - diagnostic imaging
Cornea
Female
Haptics
Humans
intraocular lens
Intraocular lenses
Lenses, Intraocular
Male
Measurement
Methods
Middle Aged
Nomograms
Observer Variation
ocular dimensions
optical coherence tomography
Proprietary
Reproducibility of Results
Surgery
Tomography
Tomography, Optical Coherence - methods
Ultrasonic imaging
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Summary:The determination of sulcus-to-sulcus measurements has been challenging due to the limitations of current approaches. Ultrasound methods are highly operator-dependent and require extensive training, while traditional optical devices cannot visualize structures posterior to the iris. However, modern optical anterior segment coherence tomography (AS-OCT) devices are changing this paradigm by identifying some anatomical landmarks posterior to the iris. This study evaluates the reproducibility of optical sulcus measurements in the context of sizing a novel accommodative intraocular lens (IOL). Preoperative OCT scans of patients scheduled for cataract surgery were analyzed regarding the dimensions of the ciliary sulcus using a custom scan method with a clinically available anterior segment optical coherence tomographer. Measurements were compared between two different readers, and various derived parameters were compared. The measurements by both readers were highly correlated (R > 0.96), and their agreement was excellent (mean difference 0.02 mm with 95% limits of agreement from -0.11 to 0.15 mm). In contrast, the sulcus diameter measurement did not agree well with automatically calculated values, such as the anterior chamber width or white-to-white. This leads to the conclusion that modern swept-source AS-OCT measurements of the ciliary sulcus dimensions are feasible, reproducible, and may be a clinically useful tool.
ISSN:1424-8220
1424-8220
DOI:10.3390/s24216950