Journals / Glokom Katarakt / 2016 / Cilt: 11 - Sayı: 1

Comparison of the Effect of Pupillary Dilation on Keratometric Values Obtained by Partial Coherence Interferometry and Correlation of These Values with Keratometric Data Obtained by Automated Keratometer and Rotating Scheimpflug Imaging System

Pupilla Dilatasyonunun Parsiyel Koherens İnterferometri ile Elde Edilen Keratometri Değerleri Üzerine Olan Etkisinin Araştırılması ve Bu Değerlerin Otomatik Keratometri ve Dönen Scheimpflug Görüntüleme Sistemi ile Elde Edilen Değerler ile Korelasyonu

Pages
38–43
DOI
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The difference between the values was statistically significant (p<=0.0001) but the correlation among these three systems was strong (r=0.988, p<0.001 and r=0.989, p<0.001, respectively).Conclusions: IOLMaster keratometric values in pre- and post- dilatation pupillas are similar but IOLMaster keratometric values can differ from automated keratometry and Scheimpflug imaging system.

📌 3 Key Takeaways

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Objective & Hypothesis:Aim: To compare the effect of pupilla dilatation on the IOLMaster keratometric values and investigate the correlation of keratometric data obtained by IOLMaster, automated keratometer and rotating Scheimpflug imaging system.Material and Methods: The right eyes of 68 healthy subjects were examined prospectively.
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Key Findings & Data:The mean age of the subjects was 36.26±15.51 years.
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Conclusion & Impact:The difference between the values was statistically significant (p<=0.0001) but the correlation among these three systems was strong (r=0.988, p<0.001 and r=0.989, p<0.001, respectively).Conclusions: IOLMaster keratometric values in pre- and post- dilatation pupillas are similar but IOLMaster keratometric values can differ from automated keratometry and Scheimpflug imaging system.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Aim: To compare the effect of pupilla dilatation on the IOLMaster keratometric values and investigate the correlation of keratometric data obtained by IOLMaster, automated keratometer and rotating Scheimpflug imaging system.Material and Methods: The right eyes of 68 healthy subjects were examined prospectively. The mean age of the subjects was 36.26±15.51 years. Keratometry measurements in the flat (K1) and steep (K2) meridians were taken with the IOLMaster in eyes with pre-dilatation and post-dilatation of the pupillas. Automated keratometer and rotating Scheimpflug imaging system measurements were obtained simultaneously, after pupil dilatation. The measurement differences between the devices were compared by analysis of variance and Friedman analysis of variance. The correlation between devices were evaluated by using Pearson correlation analysis.Results: The K1/K2 readings of the IOLMaster were 43.37/44.33 diopters in pre-dilatation and 43.38/44.32 diopters in post-dilatation. The difference between keratometric values in pre- and post-dilataion pupilla were not statistically significant (p>0.05). The K1/K2 readings of the automated keratometer and Scheimpflug imaging system were 43.35/44.18 diopters and 43.12/44.07 diopters, respectively. The difference between the values was statistically significant (p<=0.0001) but the correlation among these three systems was strong (r=0.988, p<0.001 and r=0.989, p<0.001, respectively).Conclusions: IOLMaster keratometric values in pre- and post- dilatation pupillas are similar but IOLMaster keratometric values can differ from automated keratometry and Scheimpflug imaging system.

Özet

Amaç: Parsiyel koherens interferometri (IOLMaster) ile yapılan keratometri ölçümleri üzerine pupilla dilatasyonunun etkisini ve IOLMaster ile otomatik keratometri ve dönen Scheimpflug görüntüleme sistemi arasındaki uyumu araştırmak.Gereç ve Yöntem: 68 sağlıklı bireyin sağ gözü prospektif olarak incelendi. Hastaların ortalama yaşı 36.26±15.51 yıl idi. Pupilla dilatasyonu öncesinde IOLMaster ile yapılan düz (K1) ve dik (K2) keratometri ölçümleri dilatasyon sonrasında IOLMaster, otomatik keratometri ve Scheimpflug görüntüleme sistemleri ile eş zamanlı olarak tekrar edildi. Cihazlar arasındaki ölçüm farklılıkları varyans analizi ve Friedman analizi kullanılarak karşılaştırıldı. Cihazlar arasındaki uyumluluk ise Pearson korelasyon analizi kullanılarak değerlendirildi.Bulgular: IOLMaster ile yapılan ölçümde K1/K2 değeri dilatasyon öncesinde ortalama 43.37/44.33 diyoptri, dilatasyon sonrasında ise 43.38/44.32 diyoptri olarak saptandı. Dilatasyon öncesi ve sonrasında IOLMaster ile yapılan keratometri ölçümleri arasında istatistiksel olarak anlamlı fark saptanmadı (p>0.05). Otomatik keratometri ile yapılan ölçümde K1/K2 değeri 43.35/44.18 diyoptri, Scheimpflug sistemi ile yapılan ölçümde 43.12/ 44.07 diyoptri olarak saptandı. Üç cihaz ile elde edilen K1 ve K2 değerleri arasında istatistiksel olarak anlamlı fark bulunmasına rağmen (p<=0.0001), yapılan korelasyon analizinde cihazlar arasında güçlü uyum bulunduğu saptandı (sırasıyla r=0.988,p<0.001;r=0.989,p<0.001). Sonuç: IOLMaster ile elde edilen keratometri değerlerinin dilatasyon öncesi ve sonrasında benzer olduğu, ancak IOLMaster ile Scheimpflug görüntüleme sistemi ve otomatik keratometri cihazları arasında farklılık olabileceği saptandı.

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Cite This Article

EROĞLU, F. Ç., GÜNGÖR, S., ASENA, L., ÇELEBİ, N., AKMAN, A. (2016). Comparison of the Effect of Pupillary Dilation on Keratometric Values Obtained by Partial Coherence Interferometry and Correlation of These Values with Keratometric Data Obtained by Automated Keratometer and Rotating Scheimpflug Imaging System. Glokom Katarakt, Cilt: 11 - Sayı: 1, 38–43. https://ajindex.com/articles/226441

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