Journals / Glokom Katarakt / 2011 / Cilt: 6 - Sayı: 1

Comparison of goldmann applanation tonometry and dynamic contour tonometry in eyes with different corneal thicknesses

Farklı merkezi kornea kalınlıklarında goldmann applanasyon tonometresi ile dinamik kontur tonometrenin karşılaştırılması

Pages
40–43
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

However this difference was statistically significant only in thin corneas.

📌 3 Key Takeaways

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Objective & Hypothesis:Purpose: To compare intraocular pressure (IOP) levels measured with Goldmann applanation tonometer (GAT) and Pascal dynamic contour tonometer (DCT) in patients with various central corneal thicknesses (CCT).
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Key Findings & Data:Material and Methods: We studied 103 eyes of 103 consecutive patients who were followed in glaucoma department.Ultrasound pachimeter was used to evaluate CCT in all subjects.
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Conclusion & Impact:However this difference was statistically significant only in thin corneas.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Purpose: To compare intraocular pressure (IOP) levels measured with Goldmann applanation tonometer (GAT) and Pascal dynamic contour tonometer (DCT) in patients with various central corneal thicknesses (CCT). Material and Methods: We studied 103 eyes of 103 consecutive patients who were followed in glaucoma department.Ultrasound pachimeter was used to evaluate CCT in all subjects. Patients were divided into three groups according to their central corneal thicknesses. Group 1 was thin CCT (<520 &#956;), group 2 was intermediate CCT (520-570 &#956;), group 3 was thick CCT (>570 &#956;). All measurements were performed by the same two physicians. The first physician measured IOPs with GAT and at least ten minutes later the second physician measured IOPs with DCT. Measurements were compared between groups. Results: Mean age of patients was 60.3±12.6 years. Mean CCT values were 488.2±19,6 &#956; for group 1 (n: 30), 543.2±13.7 &#956; for group 2 (n: 35 ) and 605.0±29.9 &#956; for the group 3 (n: 38). Mean IOP measurements obtained with GAT and DCT were 14.5±4.5 and 20.2±5.7 mmHg in group 1; 17.7±3.9 and 21.2±3.8 mmHg in group 2; 20.3±4.8 and 23.9±4.9 mmHg in group 3 respectively. Mean IOP difference between DCT and GAT was 4.2±3.5 mmHg in the whole study group. While this difference was statistically significant between group 1 and 2 (p=0.05), it wasn&#8217;t significant between group 2 and 3 (p=0.87). There was a positive correlation between CCT and measurements made with both GAT and DCT. Negative correlation was found between CCT and the difference of IOP measured with DCT and GAT. Conclusion: IOP values obtained with DCT were higher than with GAT for all CCTs. However this difference was statistically significant only in thin corneas.

Özet

Amaç: Farklı merkezi kornea kalınlıklarına (MKK) sahip gözlerde Pascal Dinamik Kontur Tonometre (DKT) ve Goldmann applanasyon tonometre (GAT) ile ölçülen göz içi basınçlarını (GİB) karşılaştırmak. Gereç ve Yöntem: Glokom bölümünde izlenen ardışık 103 hastanın 103 gözü incelendi. Olgular ultrasonik pakimetri ile alınan MKK’na göre ince (520 μ’dan az), (grup 1), orta (520-570 μ arası), (grup 2) ve kalın (570 μ’dan fazla), (grup 3) olmak üzere 3 gruba ayrıldı. Ölçümler hep aynı iki hekim tarafından yapıldı. Birinci hekim GAT ile GİB ölçümlerini yaptıktan en az 10 dakika sonra ikinci hekim DKT ölçümlerini aldı. Ölçümler gruplar arasında karşılaştırıldı. Bulgular: Olguların ortalama yaşı 60.3±12.6 yıldı. Ortalama MKK grup 1’de (n=30) 488.2±19.6 μ, grup 2’de (n=35) 543.2±13.7 μ, grup 3’te (n=38) 605.0±29.9 μ idi. GAT ile ve DKT ile alınan GİB ortalamaları sırasıyla grup 1’de 14.5±4.5 ve 20,2±5,7 mmHg; grup 2’de 17.7±3.9 ve 21.2±3.8 mmHg; grup 3’te ise 20.3±4.8 ve 23.9±4.9 mmHg idi. DKT ve GAT ile ölçülen GİB arasındaki fark tüm çalışma grubunda ortalama 4.2±3.5 mmHg idi. DKT ile GAT arasındaki GİB farkı grup 1 ve grup 2 arasında anlamlı iken (p=0,05), grup 2 ve 3 arasında istatistiksel olarak anlamlı bulunmadı (p= 0.87). MKK ile GAT ve DKT ölçümleri arasında pozitif korelasyon mevcuttu. MKK ile DKT ve GAT arasındaki GİB farkı arasında negatif korelasyon tespit edildi. Sonuç: DKT ile GAT’a göre tüm merkezi kornea kalınlıklarında daha yüksek GİB ölçümü alınmaktadır. Bununla birlikte yalnızca ince kornealarda bu fark istatistiksel olarak anlamlı bulunmuştur.

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Cite This Article

DÜNDAR, H., ALTAN, Ç., ŞATANA, B., TÜZÜN, D., DEMİROK, A., YILMAZ, Ö. F. (2011). Comparison of goldmann applanation tonometry and dynamic contour tonometry in eyes with different corneal thicknesses. Glokom Katarakt, Cilt: 6 - Sayı: 1, 40–43. https://ajindex.com/articles/226837

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