Journals / Türk Oftalmoloji Dergisi / 2015 / Cilt: 45 - Sayı: 6

Repeatability and Reproducibility of Anterior Segment Measurements in Normal Eyes Using Dual Scheimpflug Analyzer

Normal Gözlerde Çift Scheimpflug Analizörü ile Yapılan Ön Segment Ölçümlerinin Gözlemci İçi ve Gözlemciler Arası Tutarlılığı

Pages
243–248
Publication Date
2022-11-05
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Therefore, the instrument can be confidently used for routine clinical use and research purposes

📌 3 Key Takeaways

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Objective & Hypothesis:Objectives: To assess the repeatability and reproducibility of anterior segment measurements including aberrometric measurements provided by a dual Scheimpflug analyzer (Galilei) system in normal eyes.Materials and Methods: Three repeated consecutive measurements were taken by two independent examiners.
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Key Findings & Data:The following were evaluated: total corneal power and posterior corneal power, corneal higher-order wavefront aberrations (6.0 mm pupil), pachymetry at the central, paracentral, and peripheral zones, and anterior chamber depth (ACD).
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Conclusion & Impact:Therefore, the instrument can be confidently used for routine clinical use and research purposes
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objectives: To assess the repeatability and reproducibility of anterior segment measurements including aberrometric measurements provided by a dual Scheimpflug analyzer (Galilei) system in normal eyes.Materials and Methods: Three repeated consecutive measurements were taken by two independent examiners. The following were evaluated: total corneal power and posterior corneal power, corneal higher-order wavefront aberrations (6.0 mm pupil), pachymetry at the central, paracentral, and peripheral zones, and anterior chamber depth (ACD). Repeatability was assessed by calculating the withinsubject standard deviation, precision, repeatability, and intraclass correlation coefficient (ICC). Bland-Altman analysis was used for assessing reproducibility.Results: Thirty eyes of 30 patients were included. The best ICC values were for corneal pachymetry and ACD. For both observers, acceptable ICC was also achieved for the other parameters, the only exceptions being posterior corneal astigmatism and total high order aberration. The 95% LoA (Limits of Agreement) values for all measurements showed small variability between the two examiners.Conclusion: The Galilei system provided reliable measurements of anterior segment parameters. Therefore, the instrument can be confidently used for routine clinical use and research purposes

Özet

Amaç: Normal gözlerde çift Scheimpflug analizörü (Galilei) ile ölçülen aberometrik ölçümleri de içeren ön segment parametrelerinin gözlemci içi ve gözlemciler arası tutarlılığının değerlendirilmesidir.Gereç ve Yöntem: İki bağımsız gözlemci tarafından birbirini takip eden üçer ölçüm yapıldı. Toplam ve arka korneal güç, korneal yüksek sıralı wavefront aberasyonlar (6,0 mm pupil), santral, parasantral ve periferik pakimetri ve ön kamara derinliği (ÖKD) değerlendirildi. Gözlemcilerin ölçümleri arasındaki tutarlılıklar gözlemci içi standart sapma, kesinlik, tekrarlanabilirlik ve sınıf içi korelasyon katsayısı (SKK) ile belirlendi. Gözlemciler arası tutarlılık ise Bland-Altman analizi ile değerlendirildi.Bulgular: Çalışmaya 30 hastanın 30 gözü dahil edildi. En iyi SKK değerleri pakimetri ve ÖKD ölçümlerinde elde edildi. Her iki gözlemci arka korneal astigmatizma ve toplam yüksek sıralı aberasyonlar haricindeki parametrelerde kabul edilebilir SKK değerleri elde edebilmişlerdir. Her iki gözlemcinin ölçümleri arasında %95 LoA (Limits of Agreement) değerleri oldukça küçük değişkenlik göstermekte idi. Sonuç: Galilei sistemi ile tutarlı bir şekilde ön segment parametrelerinin ölçümü yapılabilmektedir. Bu nedenle cihaz rutin klinik uygulamalarda ve araştırmalarda güvenilir bir şekilde kullanılabilir

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Cite This Article

GÜLER, E., HEPŞEN, İ. F., ARSLANYILMAZ, Z., ALTIPARMAK, Z., YAĞCI, R., CANBAL, M. (2022). Repeatability and Reproducibility of Anterior Segment Measurements in Normal Eyes Using Dual Scheimpflug Analyzer. Türk Oftalmoloji Dergisi, Cilt: 45 - Sayı: 6, 243–248. https://ajindex.com/articles/638010

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