Journals / Glokom Katarakt / 2006 / Cilt: 1 - Sayı: 1

Central corneal thickness measurement and its importance in glaucoma

Glokomda santral korneal kalınlık ölçümü ve önemi

Pages
1–6
DOI
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AI Summary & Key Takeaways

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

In this review, CCT measurement techniques, the relationships between IOP and CCT and its importance has been discussed by using the literature knowledge.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The accuracy of IOP measurement is crucial in the screening, diagnosis, and management of glaucoma.
📊
Key Findings & Data:Goldmann applanation tonometry (GAT) has been considered the gold standart for intraocular pressure (IOP) measurements for almost 50 years.
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Conclusion & Impact:In this review, CCT measurement techniques, the relationships between IOP and CCT and its importance has been discussed by using the literature knowledge.
🔬Design:Review & Systematic Survey
📍Scope:Comprehensive Sample
⚙️Variables:Göz içi basınç · Kornea · Glokom

Abstract

The accuracy of IOP measurement is crucial in the screening, diagnosis, and management of glaucoma. Goldmann applanation tonometry (GAT) has been considered the gold standart for intraocular pressure (IOP) measurements for almost 50 years. GAT is accurate for central corneal thickness (CCT) at 520 μm. We now know that CCT varies greatly among the general population. Individual variation in CCT may lead to inaccurate GAT measurement. The average CCT for normal eyes was found to be 534 μm that acquired by both optical-based and ultrasound pachymetry. The IOP may be underestimated in thinner corneas and falsely elevated in those with thicker corneas. Falsely low IOP readings create the risk for misdiagnosis of potential glaucoma patients, resulting in missed or delayed glaucoma detection. In this review, CCT measurement techniques, the relationships between IOP and CCT and its importance has been discussed by using the literature knowledge.

Özet

Göz içi basıncı (GİB) ölçümünün doğruluğu, glokom taramasında, glokom tanı ve tedavisinde, çok önemlidir. Yaklaşık 50 yıldır Goldmann Applanasyon tonometrisi (GAT) GİB ölçümünde altın standart yöntemdir. GAT’nde, SKK’ın 520 μm olarak kabul edilmiştir. Günümüzde santral korneal kalınlığın normal popülasyonda çok değişkenlik gösterdiğini biliyoruz. Kişiler arasındaki bu farklılık GAT ölçümlerinde şüpheye yol açmaktadır. Sağlıklı kişilerde optik ve ultrasonik pakimetrelerle yapılan ölçümlerde, SKK 534 μm olarak bulunmuştur. Normalden daha ince kornealarda GİB düşük, daha kalın kornealarda yüksek ölçülebilir. GİB ölçümünün yanlış olarak normalden düşük ölçülmesi glokom olasılığı olan hastalarda, yanlış tanı için risk oluşturur ve glokom tesbitinin gecikmesine veya gözden kaçırılmasına yol açabilir. Bu makalede SKK ölçüm teknikleri, GİB ile SKK ilişkisi ve önemi literatür bilgilerinden yararlanılarak tartışılmıştır.

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Cite This Article

ARITÜRK, N. (2006). Central corneal thickness measurement and its importance in glaucoma. Glokom Katarakt, Cilt: 1 - Sayı: 1, 1–6. https://ajindex.com/articles/226713

References (15)

  1. Leske MC, Heijl A, Hussein M, Bengsson B, Hyman L, Komaroff E. Early manifest glaucoma trial group. Factors for glaucoma progression and the effect of treatment: The early manifest glaucoma trial. Arch Ophthal. 2003;121;48-56
  2. Gordon The Ocular Hypertension Treatment Study. Baseline factors that predict the onset of primary open angle glaucoma. Arch Ophthalmol. 2002;120:714-720
  3. Ehler N, Hjortdal J. Corneal thickness:measurement and implications. Experimental Eye Research, 2004;78:543-548
  4. Blix M.Oftalmometriska studier.Uppsala Lakareförenings Förhandlingar 1879;15:349-420 5. Maurice DM,Giardini AA. A simple optical apparatus for measuring the corneal thickness and the average thickness of the human cornea. Br J Ophthalmol.1951:35:169-177
  5. Olsen T,Ehlers N. The thickness of the human cornea as determined by a specular method. Acta Ophthalmol. 1984;62:859-871
  6. Jaeger W.Tiefemnmessung der menschlichen Vonderkammer mit planparallelen Platten. Graefes Arch Ophthalmol.153;120-131
  7. Hansen FK. A clinical study of the normal human central corneal thickness. Acta Ophthalmol.1971;49:82-89
  8. Green DG, Frueh BR, Shapiro JM. Corneal thickness measured by interferometry. J.Opt.Soc.Am.1975;65:119-123
  9. Rabsilber TM, Becker KA, Auffart GU. Reliability of Orbscan II topography measurements in relation to refractive status JCRS,2005;31:1607- 1613 11. Edmund C.Determination of the corneal thickness profile by optical pacometry.Acta Ophthalmol. 1987;65:147 12. Doughty M, Zaman M. Human corneal thickness measures: A review and meta-analysis approach. Surv Ophthalmol. 2000;44:367-408
  10. Suzuki S, Oshika T, Oki K, Sakabe I, Iwase A, Amona S, Araie M. Corneal thickness measurements: scanning-slit corneal topography and noncontact specular microscopy versus ultrasonic pachymetry. J Cataract Refr Surg 2003;29:1313-1318
  11. McLaren JW, Nau CB, Erie JC, Bourne WM. Corneal thickness measurement by confocal microscopy, ultrasound, and scanning slit methods. Am J Ophthalmol 2004;137:1011-1020
  12. Kawana K, Tokunaga T, Miyata K, et al.: Ophthalmol 2004;88:466- 468
  13. Bovelle R, Kaufmann SC, Thompso SW, et al.: Corneal thickness measurements with the Topcon SP-2000P specular microscope and an ultrasound pachymeter. Arch Ophthalmol. 1999;117:868-870
  14. Nissen J, Hjordal JO, Ehlers N, et al.: A clinical comparison of optical and ultrasonic pachymetry. Acta Ophthalmol 1991;69:659-663
  15. Wheeler NC, Morantes CM, Kristensen RM, et al.: Reliability coeffici