Evaluation of Individual Dependence and Reproducibility of Central Corneal Thickness Measurements with Anterior Segment Optical Coherence Tomography

Öz

Abstract Aim: To compare corneal thickness measurements made at different times and to evaluate their dependence on individuals. Materials and Methods: The central corneal thickness of the right eyes of 30 healthy young adults was measured by the first investigator at three different times by the Anterior Segment Optical Coherence Tomography (AS-OCT) method. In addition, the fourth measurements were made by the second researcher at a different time. The obtained values were compared. Results: The mean age was 29.8 ± 9.1 years. The mean CCT was 561.90 ± 37.6 µ in the first measurement, 562.20 ± 37.9 µ in the second measurement, and 562.80 ± 37.7 µ in the third measurement. In the measurement of CCT by the second investigator, the mean was 562.20 ± 38.0 µ. In statistical analysis, no significant difference was found between CCT values performed at different times (p<0.05). In addition, when the first measurement of the first researcher was compared with the first measurement of the second researcher, no significant difference was found between the CCT values of the two researchers (p<0.05). Conclusion: Canon HS-100 AS-OCT device had very good reproducibility in the evaluation of CCT. There was no significant difference between the shots of different people. The use of OCT in daily practice is beneficial because it is both a non-contact method and has very good reproducibility in daily practice. Keywords: Central corneal thickness, reproducibility, measurement

Anahtar Kelimeler

• Central corneal thickness
• reproducibility
• measurement

Ön Segment Optik Koherens Tomografi ile Merkezi Kornea Kalınlığı Ölçümlerinin Bireysel Bağımlılık ve Tekrarlanabilirliğinin Değerlendirilmesi

Öz

Öz Amaç: Farklı zamanlarda yapılan kornea kalınlığı ölçümlerini karşılaştırmak ve kişilere bağımlılığını değerlendirmek. Gereç ve Yöntem: 30 sağlıklı genç erişkinin sağ gözlerinin santral korneal kalınlığı Anterior Segment Optical Coherence Tomography (AS-OCT) yöntemi ile birinci araştırmacı tarafından üç ayrı zamanda ölçüldü. Ayrıca ikinci araştırmacı tarafından dördüncü ölçümleri farklı bir zamanda yapıldı. Elde edilen değerler karşılaştırıldı. Bulgular: Yaş ortalaması 29.8 ± 9.1 idi. Ortalama SKK birinci ölçümde 561.90 ± 37.6 µ, ikinci ölçümde 562.20 ± 37.9 µ, üçüncü ölçümde 562.80 ± 37.7 µ idi. SKK’ nın 2. araştırmacı tarafından ölçümünde ise ortalama 562.20 ± 38.0 µ idi. İstatistiksel analizde farklı zamanlarda yapılan SKK değerleri arasında anlamlı fark bulunamamıştır (p<0.05). Ayrıca birinci araştırmacının ilk ölçümüyle, ikinci araştırmacının ilk ölçümü karşılaştırıldığında, iki araştırmacı arasındaki SKK değerleri arasında anlamlı fark bulunmadı (p<0.05). Sonuç: Canon HS-100 AS-OCT cihazının SKK değerlendirilmesinde tekrarlanabilirliğinin çok iyi olduğu görüldü. Farklı kişilerin çekimleri arasında anlamlı bir farklılık görülmedi. Günlük pratikte hem non-kontakt bir yöntem olduğu, hem de tekrarlanabilirliği çok iyi olduğu için OCT’ nin günlük pratikte kullanılması faydalıdır. Anahtar Kelimeler: Santral korneal kalınlık, tekrarlanabilirlik, ölçüm

Anahtar Kelimeler

• Santral korneal kalınlık
• tekrarlanabilirlik
• ölçüm

Kaynakça

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