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Journals / Glokom Katarakt / 2012 / Cilt: 7 - Sayı: 2

Comparison of goldmann applanation tonometry, tonopen-avia and ocular response analyser on ıntraocular pressure measurement and the effect of central corneal thickness

Göz içi basıncı ölçümünde goldmann applanasyon tonometresi, tonopen avia, oküler cevap analizörü karşılaştırması ve merkezi kornea kalınlığının ölçümlere etkisi

Işıl PAŞAOĞLU
Mümin Hakan EREN
Ali DEMİRCAN
Hülya GÜNGEL
Çiğdem ALTAN
Ercan PAŞAOĞLU
Pages
101–104
DOI
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AI Summary & Key Takeaways

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

Conclusion: IOP values measured with GAT were lower than those measured with ORA in thin corneas, and lower than those measured with Tono-Pen AVIA in thick corneas.

📌 3 Key Takeaways

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Objective & Hypothesis:Purpose: To compare the intraocular pressure measurements obtained with a Goldmann applanation tonometer (GAT), Tono-Pen AVIA, and ocular response analyzer (ORA) and to investigate the effect of central corneal thickness (CCT).
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Key Findings & Data:The patients were divided into 3 groups as follows: group 1, thin (<545 µm); group 2, moderate (545-580 µm); and group 3, thick (>580 µm) according to CCT measured by ultrasonic pachymetry.
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Conclusion & Impact:Conclusion: IOP values measured with GAT were lower than those measured with ORA in thin corneas, and lower than those measured with Tono-Pen AVIA in thick corneas.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Purpose: To compare the intraocular pressure measurements obtained with a Goldmann applanation tonometer (GAT), Tono-Pen AVIA, and ocular response analyzer (ORA) and to investigate the effect of central corneal thickness (CCT). Materials and Methods: Seventy-seven eyes followed because of primary open angle glaucoma were studied prospectively. IOP was measured by GAT, Tono-Pen AVIA, and ORA. The patients were divided into 3 groups as follows: group 1, thin (<545 µm); group 2, moderate (545-580 µm); and group 3, thick (>580 µm) according to CCT measured by ultrasonic pachymetry. Measurements were compared between the groups. Results: The average age was 57.31±10.87 years. The average CCT was 528.92±12.58 &#956;m for group 1, 557.40±9.14 &#956;m for group 2, and 601.90±19.01 &#956;m for group 3. GAT, Tono-Pen AVIA, and ORA measurements were 15.6±3.3, 16.7±2.9, and 16.9±3.9 mmHg in the whole study group; 15.1±3.9, 16.2±3.0, and 16.9±4.4 mmHg in group 1; 15.4±2.8, 16.5±2.5, and 16.4±3.7 mmHg in group 2; and 16.4±3.1, 17.7±3.4, 17.6± 3.6 mmHg in group 3, respectively. GAT measurements were significantly lower than Tono-Pen AVIA and ORA measurements in the whole study group (p=0.001, p=0.000), but there was no significant difference between Tono-Pen AVIA and ORA (p=0.64). According to CCT, while GAT values were lower than Tono-Pen AVIA measurements in groups 2 and 3 (p=0.015, p=0.18), no significant difference was observed in group 1 (p=0.075). Moreover, GAT values were lower than ORA measurements in groups 1 and 2 (p=0.003 and p=0.020), but there was no significant difference in group 3 (p=0.068). Conclusion: IOP values measured with GAT were lower than those measured with ORA in thin corneas, and lower than those measured with Tono-Pen AVIA in thick corneas.

Özet

Amaç: Göz içi basıncı (GİB) ölçümünde; Goldmann applanasyon tonometresi (GAT), Tonopen Avia ve Oküler cevap analizörünün (OCA) sonuçlarını karşılaştırmak ve merkezi kornea kalınlığının (MKK) etkisini araştırmak. Gereç ve Yöntemler: Primer açık açılı glokom nedeniyle takip edilen 77 göz ileriye dönük incelendi. GİB GAT, Tonopen Avia ve OCA ile ölçüldü. Olgular, ultrasonik pakimetre ile alınan MKK'na göre grup 1 ince (545 μ'dan az); grup 2 orta (545-580 μ arası) ve grup 3 kalın (580 μ'dan fazla) olmak üzere üç gruba ayrıldı. Ölçümler gruplar arasında karşılaştırıldı. Bulgular: Ortalama yaş 57.31±10.87 yıldı. Ortalama MKK ilk grupta 528.92±12.58 μm., ikinci grupta 557.40±9.14 μm, üçüncü grupta 601.90±19.01μm idi. GAT, Tonopen Avia ve OCA ölçümleri sırasıyla; tüm seride 15.6±3.3, 16.7±2.9; 16.9±3.9 mmHg; ilk grupta 15.1±3.9, 16.2±3.0, 16.9±4.4 mmHg; ikinci grupta 15.4±2.8, 16.5±2.5, 16.4±3.7 mmHg ve üçüncü grupta ise 16.4±3.1, 17.7±3.4, 17.6±3.6 mmHg bulundu. Tüm grupta GAT, Tonopen Avia ve OCA ile kıyaslandığında anlamlı derecede düşük bulunurken (p=0.001, p=0.000), Tonopen Avia ile OCA arasında anlamlı fark bulunmadı (p=0.64). MKK'na göre GAT ile ölçülen değerler Tonopen Avia değerlerine göre grup 2 ve grup 3'de düşük iken (sırasıyla p=0.015, p=0.018), grup 1'de anlamlı fark bulunmadı (p=0.075). GAT ile ölçülen değerler OCA ile değerlerine göre grup 1 ve grup 2'de düşük iken (p=0.003, p=0.020) grup 3'de anlamlı bulunmadı (p=0.068). Sonuç: Kornea kalınlıklarına göre GAT ile yapılan ölçümler ince kornealarda OCA'e göre, kalın kornealarda ise Tonopen-Avia'ya göre düşük bulunmuştur.

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Cite This Article

PAŞAOĞLU, I., EREN, M. H., DEMİRCAN, A., GÜNGEL, H., ALTAN, Ç., PAŞAOĞLU, E. (2012). Comparison of goldmann applanation tonometry, tonopen-avia and ocular response analyser on ıntraocular pressure measurement and the effect of central corneal thickness. Glokom Katarakt, Cilt: 7 - Sayı: 2, 101–104. https://ajindex.com/articles/216184

References (15)

  1. Kass MA, Heur DK, Higginbotham EJ, et al. The ocular hypertension treatment study: a randomised trial determines that topical ocular hypotensive medication delays or prevents the onset of primary open angle glaucoma. Arch Ophthalmol 2002;1209:701-13
  2. Leske MC, Heijl A, Hussein M, et al. Early Manifest Glau coma Trail Group. Factors for glaucoma progression and the effect of treatment: the early manifest glaucoma trial. Arch Ophthalmol 2003;121:48-56
  3. Goldmann H, Schmidt T. Applanation tonometry. Ophthalmo logica 1957;134:221-42
  4. Whitacre MM, Stein R. Sources of error with use of Goldmann type tonometers. Surv Ophthalmol 1993;38:1-30
  5. Whitacre MM, Stein RA, Hassanein K. The effect of corne al thickness on applanation tonometry. Am J Ophthalmol 1993;115:592-6
  6. Bron AM, Creuzot-Garcher C, Goudeau-Boutillon S, et al. Falsely elevated intraocular pressure due to increased cent ral corneal thickness. Graefes Arch Clin Exp Ophthalmol 1999;237:220-4
  7. Tuncer Z. The effect of central corneal thickness on intrao cular pressure values measured by goldmann applanation tonometer and pascal dynamic counter tonometer. Glo-Kat 2011;6:36-9
  8. Dündar H, Altan C, Satana B, et al. Comparison of goldmann applanation tonometry and dynamic contour tonometry in eyes with different corneal thickness. Glo-Kat 2011;6:40-3
  9. Iester M, Mete M, Figus M, et al. Incorporating corneal pach ymetry into the management of glaucoma. J Cataract Refract Surg 2009;35:1623-8
  10. Manni G, Oddone F, Parisi V, et al. Intraocular pressure and central corneal thickness. Prog Brain Res 2008;173:25-30
  11. Shah S, Chatterjee A, Mathai M, et al. Relationship between corneal thickness and measured intraocular pressure in a ge neral ophthalmology clinic. Ophthalmology 1999;106:2154-60
  12. Copt RP, Thomas R, Mermoud A. Corneal thickness in ocular hypertension, primary open-angle glaucoma and normal ten sion glaucoma. Arch Ophthalmol 1999;117:14-6
  13. Bhan A, Browning AC, Shah S, et al. Effect of corneal thick ness on intraocular pressure measurements with the pneumo tonometer, Goldmann applanation tonometer and Tono-pen. Invest Ophthalmol Vis Sci 2002;43:1389-92
  14. Amaral WO, Teixeira RM, Alencar LM, et al. Central and pe ripheral corneal thickness: influence on the iop measurement by Tonopen. Arq Bras Oftalmol 2006;69:41-5
  15. Kim NR, Kim CY, Kim H, et al. Comparison of goldmann applanation tonometer, noncontact tonometer, and TonoPen XL for intraocular pressure measurement in