Journals / Gülhane Tıp Dergisi / 2006 / Cilt: 48 - Sayı: 1

Comparison of central corneal thickness with optical cohorence reflectometer and ultrasound pachymeter in early postoperative LASIK period

LASİK cerrahisinde erken postoperatif dönemde optik koherens reflektometri ve ultrasonografik pakimetri ile santral kornea kalınlığının karşılaştırılması

Pages
11–13
DOI
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AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Optical low coherence reflectometer gives comparable results with ultrasound pachymeter in the measurement of central corneal thickness, and especially postoperative central corneal thickness measurement is superior to ultrasound pachymeter because it is a non-contact method.

📌 3 Key Takeaways

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Objective & Hypothesis:Comparison of central corneal thickness with optical coherence reflectometer and ultrasound pachymeter in early postoperative LASIK period The aim of this study was to compare the efficacy of optical low coherence reflectometer and ultrasound pachymeter in the measurement of central corneal thickness in preoperative and early postoperative LASIK surgery period.
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Key Findings & Data:Twenty one eyes of the 12 patients who admitted to the Gulhane Military Medical Academy Ophthalmology Department, Cornea and Refractive Surgery Service were enrolled in the study.
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Conclusion & Impact:Optical low coherence reflectometer gives comparable results with ultrasound pachymeter in the measurement of central corneal thickness, and especially postoperative central corneal thickness measurement is superior to ultrasound pachymeter because it is a non-contact method.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Kornea · Keratomileusis · lazer in sitü

Abstract

Comparison of central corneal thickness with optical coherence reflectometer and ultrasound pachymeter in early postoperative LASIK period The aim of this study was to compare the efficacy of optical low coherence reflectometer and ultrasound pachymeter in the measurement of central corneal thickness in preoperative and early postoperative LASIK surgery period. Twenty one eyes of the 12 patients who admitted to the Gulhane Military Medical Academy Ophthalmology Department, Cornea and Refractive Surgery Service were enrolled in the study. Five consequtive optical low coherence reflectometer measurements of the patients were taken at the first preoperative and 7th postoperative days with optical low coherence reflectometer and ultrasound pachymeter, respectively. If a difference of more than 10 microns has been detected, 3 additional measurements have been taken. Mean of the lowest 5 measurements has been recorded. Preoperative central corneal thickness was 535.5±28.9 microns with optical low coherence reflectometer, 535.4±28.5 microns with ultrasound pachymeter. Postoperative central corneal thickness was 472.3±34.5 microns with optical low coherence reflectometer, 471.8±34.9 microns with ultrasound pachymeter. There was no statistically significant difference between the preoperative and postoperative central corneal thicknesses (p=0.915 and p=0.818, respectively). Mean ablation debth was 62.3±27.8 microns. The correlation betwen the ablation debth and postoperative central corneal thickness were high both with optical low coherence reflectometer (p=0.897) and ultrasound pachymeter (p=0.820). Optical low coherence reflectometer gives comparable results with ultrasound pachymeter in the measurement of central corneal thickness, and especially postoperative central corneal thickness measurement is superior to ultrasound pachymeter because it is a non-contact method.

Özet

Bu çalışmada LASİK cerrahisi öncesi ve sonrası erken dönemde santral kornea kalınlığının ölçümünde optik düşük koherens reflektometrinin etkinliğinin ultrasonografik pakimetri ile karşılaştırılması amaçlanmıştır. GATA Göz Hastalıkları Anabilim Dalı Kornea ve Refraktif Cerrahi Birimine, refraktif cerrahi için başvurmuş olan, 12 hastanın 21 gözü çatışma kapsamına alınmıştır. Hastaların santral kornea kalınlığı, LASİK cerrahisinden önce ve postoperatif birinci haftada, önce optik düşük koherens reflektometri, ardından ultrasonografik pakimetri ile beser defa ölçülmüştür. Ölçümler arasında 10 mikrondan fazla oynama olmuşsa, 3 ölçüm daha yapılmış ve en küçük değere sahip, beş ölçümün ortalaması alınarak iki dönemde elde edilen sonuçlar ablas-yon miktan Ue karşılaştırılmıştır. Preope-ratif santral kornea kalınlığı optik düşük koherens reflektometri ile 535.5±28.9 mikron, ultrasonografik pakimetri ile 535.4±28.5 mikron olarak bulundu. Postoperatif santral kornea kalınlığı, optik düşük koherens reflektometri ile 472.3±34.5 mikron, ultrasonografik pakimetri ile 471.8_34.9 mikron olarak bulundu. Preoperatif ve postoperatif dönemde iki yöntemle alman santral kornea kalınlığı arasında istatistiksel olarak anlamlı bir farklılık tespit edilmedi (sırasıyla p= 0.915 ve 0.818). Olgulara ortalama 62.3±27.8 mikronluk ablasyon yapıldığı tespit edildi. Ablasyon miktarları ile postoperatif santral kornea kalınlıkları arasındaki korelasyonun optik düşük koherens reflektometri (p=0.897) ve ultrasonografik pakimetri ite (p=0.820) çok yüksek olduğu tespit edildi. Santral kornea kalınlığının ölçümünde optik düşük koherens reflektometri, ultrasonografik pakimetri ile uyumlu sonuçlar vermekte olup, özellikle postoperatif dönem santral kornea kalınlığının ölçümünde nonkontakt bir yöntem olması nedeniyle ultrasonografik pakimet-riye üstünlük sağlamaktadır.

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Cite This Article

HÜRMERİÇ:, V., MÜFTÜOĞLU, O., ERDEM, Ü., BAYRAKTAR, M. Z. (2006). Comparison of central corneal thickness with optical cohorence reflectometer and ultrasound pachymeter in early postoperative LASIK period. Gülhane Tıp Dergisi, Cilt: 48 - Sayı: 1, 11–13. https://ajindex.com/articles/225402

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References (9)

  1. Pallikaris IG, Kymionis GD, Astyrakakis NI. Corneal ectasia induced by laser in situ keratomileusis. J Cataract Refract Surg 2001; 27: 1796-1802
  2. Binder PS. Ectasia after laser in situ keratomileusis. J Cataract Refract Surg 2003; 29: 2419-2429
  3. Argento C, Cosentino MJ, Tytiun A, Rapetti G, Zarate J. Corneal ectasia after laser in situ keratomileusis. J Cataract Refract Surg 2001; 27: 1440-1448
  4. Joo CK, Kim TG. Corneal ectasia detected after laser in situ keratomileusis for correction of less than-12 diopters of myopia. J Cataract Refract Surg 2000; 26: 292-295
  5. 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
  6. Gillis A, Zeyen T. Comparison of optical coherence reflectometry and ultrasound central corneal pachymetry. Bull Soc Belge Ophtalmol 2004; 292: 71-75
  7. Nawa Y, Masuda K, Ueda T, Hara Y, Uozato H. Evaluation of apparent ectasia of the posterior surface of the cornea after keratorefractive surgery. J Cataract Refract Surg 2005; 31: 571-573
  8. Solomon KD, Donnenfeld E, Sandoval HP, et al. Flap Thickness Study Group. Flap thickness accuracy: comparison of 6 microkeratome models. J Cataract Refract Surg 2004; 30: 964-977
  9. Marsich MW, Bullimore MA. The repeatability of corneal thickness measures. Cornea 2000; 19: 792-795. 1O. Wirbelauer C, Pham DT. Continuous monitoring of corneal thickness changes during LASIK with online optical coherence pachymetry. J Cataract Refract Surg 2004; 30: 2559-2568.