Journals / Glokom Katarakt / 2013 / Cilt: 8 - Sayı: 2

Comparison of anterior segment parameters with optical low coherence reflectometer and combined scheimpflug-placido disk topographer

Optik düşük koherens reflektometri ve kombine scheimpflug-placido disk topografisi ile değerlendirilen ön segment parametrelerinin karşılaştırılması

Pages
78–82
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Therefore, it was concluded that both devices can be used interchangeably for the most clinical purposes.

📌 3 Key Takeaways

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Objective & Hypothesis:Purpose: To compare the anterior segment measurements derived from optical low coherence reflectometer (Lenstar LS 900, Haag-Streit AG) and combined Scheimpflug-Placido disk topographer (Sirius, CSO Inc.).
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Key Findings & Data:Material and Methods: This study comprised of sixty eyes of 30 healthy subjects.
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Conclusion & Impact:Therefore, it was concluded that both devices can be used interchangeably for the most clinical purposes.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Purpose: To compare the anterior segment measurements derived from optical low coherence reflectometer (Lenstar LS 900, Haag-Streit AG) and combined Scheimpflug-Placido disk topographer (Sirius, CSO Inc.). Material and Methods: This study comprised of sixty eyes of 30 healthy subjects. Central corneal thickness (CCT), aque- ous depth (AD:corneal endothelium to lens), anterior chamber depth (ACD: corneal epithelium to lens), keratometry mea- surements (K in the steepest and flattest meridian) and white-to-white (WTW) distance derived from both devices were compared. All measurements were repeated five times for Lenstar and three times for Sirius by the same physician and mean of these measurements were used for comparisons. Results: The CCT measurements were significantly higher whereas AD and ACD measurements were lower with Lenstar (p<0.05). Mean differences for CCT, AD, and ACD were 3.93±6.65 &#956;m, -0.08±0.04 mm, and -0.07±0.03 mm, respectively. There were no statistically significant differences between the devices for the steep and flat K values and mean WTW dis- tance (p>0.05). Pearson correlation analysis showed high correlation between the 2 devices for all measurements (r>0.90, p<0.05). On Bland-Altman analysis, 95% limits of agreement for all measurements were within clinically acceptable limits and there was good agreement between the 2 devices. Conclusion: Anterior segment parameters evaluated with Lenstar LS 900 optical biometer and Sirius anterior segment analysis system were correlated well with each other and measurement differences between the devices were clinically neg- ligible. Therefore, it was concluded that both devices can be used interchangeably for the most clinical purposes.

Özet

Amaç: Optik düşük koherens reflektometri (LenStar LS 900, Haag-Streit AG) ve kombine Scheimpflug-Placido disk topog- rafisi (Sirius, CSO Inc.) ile değerlendirilen ön segment parametrelerini karşılaştırmak. Gereç ve Yöntem: Bu çalışmaya 30 sağlıklı bireyin 60 gözü alındı. Her iki cihazdan elde edilen merkezi kornea kalınlığı (MKK), aköz derinlik (AD: kornea endoteli ve lens arası), ön kamara derinliği (ÖKD: kornea epiteli ve lens arası), kerato- metri değerleri (dik ve düz meridyendeki K değerleri) ve limbus-limbus mesafeleri (LLM) karşılaştırıldı. Tüm ölçümler aynı doktor tarafından Lenstar için 5 kez, Sirius için 3 kez tekrarlandı ve karşılaştırmalarda bu ölçümlerin ortalaması kullanıldı. Bulgular: Lenstar ile ölçülen ortalama MKK değeri istatistiksel olarak anlamlı daha yüksek iken AD ve ÖKD ölçümleri daha düşükdü (p 0.05). Pearson korelasyon analizi iki cihaz ara- sında tüm ölçümlerde çok iyi korelasyon göstermekteydi (r>0.90, p<0.05). Bland-Altman analizinde her iki cihazla elde edilen tüm verilerin %95 uyum aralığı klinik olarak kabul edilebilir sınırlarda idi ve cihazlar arasında iyi uyum mevcuttu. Sonuç: Lenstar LS 900 optik biometri ve Sirius ön segment analiz sistemi ile değerlendirilen ön segment parametreleri birbirleriyle iyi uyum göstermektedir ve cihazlar arası ölçüm farkları klinik olarak ihmal edilebilir düzeydedir. Bu nedenle her iki cihaz birçok klinik amaç için birbirinin yerine kullanılabilir kanaatine varılmıştır.

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Cite This Article

BAYHAN, H. A., BAYHAN, S. A., MUHAFIZ, E., CAN, İ. (2013). Comparison of anterior segment parameters with optical low coherence reflectometer and combined scheimpflug-placido disk topographer. Glokom Katarakt, Cilt: 8 - Sayı: 2, 78–82. https://ajindex.com/articles/213643

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