Comparison of Central Corneal Thickness Measurements with Scheimpflug Photography, Optical Coherence Tomography and Ultrasonic Pachymetry Techniques
Abstract
Objective: To compare Scheimpflug photography(SP),
optical coherence tomography(OCT) and ultrasonic pachymetry(USP) techniques in central corneal thickness(CCT) measurement.
Material and Methods: The CCT was measured in 43 healthy young adults(86 eyes in total) by using SP, OCT and
USP). Central corneal thickness, age, gender, intraocular
pressure and auto refractokeratometer values obtained
and used for comparison.
Results: The mean age of was 21,35 ± 0,75 (20-24) years. The mean CCT with USP was 558,42 ± 38,87 (477-
620) microns for right eye and 556,84 ± 39,83 (477-641)
microns for left eye. The mean CCT with SP was 555,02 ±
37,90 (486- 631) microns for right eye and 550,44 ± 42,30
(453-630) microns for left eye. The mean CCT with OCT
was 563, 52 ± 38,52 (492-644 microns for right eye and
550563,72 ± 39,84 (482-644) microns for left eye. Stataistically significant correlation found between OCT-USP
(P<0.003) and OCT-SP (P<0.001). OCT measurement
was significantly higher then other methods (about 7
micron). There was no statistically significant difference
between USP-SP.
Conclusion: CCT measurements with USP and SP were
relevant. OCT measurements were significantly higher
and others. This situation should be noted in regular CCT
measurements.
Keywords
Central corneal thickness ultrasonic pachymetry Scheimpflug photography optical coherence tomography
References
- Pflugfelder SC, Liu Z, Feuer W, et al. Corneal thickı- ness indices discriminate between keratoconus and contact lens-induced corneal thinning. Ophthalmo- logy 2002;109(12):2336-41.
- Al-Mezaine HS, Al-Amro SA, Kangave D, et al. Com- parison between central corneal thickness measure- ments by oculus pentacam and ultrasonic pachymetry. International Ophthalmology. 2008;28(5):333–8.
- Carrasco AJA, Vicent AD, Romín DM, et al. OCT tech- nique for evaluating diurnal variation in corneal thick- ness. Emmetropia 2013;4(4):197-201.
- Şekil II: Optik kohorens tomografi Miglior S, Albe E, Guareschi M, et al. Intraobserver and interobserver reproducibility in the evaluation of ultrasonic pachymetry measurements of central cor- neal thickness. Br J Ophthalmol 2004;88(2):174–7.
- Kawana K, Tokunaga T, Miyata K et al. Comparison of corneal thickness measurements using Orbscan II, noncontact specular microscopy, and ultrasonic pa- chymetry in eyes after laser in situ keratomileusis. Br J Ophthalmol 2004;88(4):466–8.
- Piotrowiak I, Soldanska B, Burduk M, et al. Measu- ring Corneal Thickness with SOCT, the Scheimpflug System, and Ultrasound Pachymetry. ISRN Ophthal- mol 2012:869319.
- Leung DY, Lam DK, Yeung BY, Lam DS. Comparison between central corneal thickness measurements by ultrasound pachymetry and optical coherence tomog- raphy. Clin Experiment Ophthalmol 2006;34(8):751–4.
- Grewal DS, Brar GS, Grewal SP. Assessment of central corneal thickness in normal, keratoconus, and post-la- ser in situ keratomileusis eyes using Scheimpflug ima- ging, spectral domain optical coherence tomography, and ultrasound pachymetry. J Cataract Refract Surg 2010;36(6):954–64
- Fishman GR, Pons ME, Seedor JA, et al. Assessment of central corneal thickness using optical coherence tomography. J Cataract Refract Surg 2005; 31(4):707– 11
- Buyuk K, Bozkurt B, Kamıs U, Ozkagnıcı A, Okudan S. Normal ve Keratokonuslu Gözlerde Ultrasonik Pa- kimetri ve OCULUS Pentacam ile Ölçülen Santral Kor- nea Kalınlıklarının Karşılaştırılması. Turk J Ophthalmol 2011;41(2):104-7.
Santral Kornea Kalınlığının Ölçümünde Scheimpflug Fotoğraflama, Optik Kohorens Tomografi ve Ultrasonik Pakimetri Yöntemlerinin Karşılaştırılması
Abstract
Amaç: Santral kornea kalınlığının(SKK) ölçümünde ultrasonik pakimetri(UP), Scheimpflug fotograflama(SF) ve optik kohorens tomografi(OKT) yöntemleri ile elde edilen değerlerin karşılaştırılması.
Gereç ve Yöntem: 43 sağlıklı genç erişkinin sağ ve sol göz (toplam 86 göz) santral korneal kalınlığı UP, SF ve OKT yöntemleri ile ölçüldü. Santral kornea kalınlığı, yaş, cinsiyet, göz içi basıncı ve otorefraktokeratometre değerleri kaydedildi. Elde edilen değerler karşılaştırıldı.
Bulgular: Ortalama yaş 21,35 ± 0,75 (20-24) idi. UP ile ölçülen ortalama SKK sağ göz için 558,42 ± 38,87 (477-620) mikron, sol göz için 556,84 ± 39,83 (477-641) mikron idi.SF ile ölçülen ortalama SKK sağ göz için 555,02 ± 37,90 (486-631) mikron, sol göz için 550,44 ± 42,30 (453-630) mikron idi.OKT ile ölçülen ortalama SKK sağ göz için 563, 52 ± 38,52 (492-644) mikron, sol göz için 563,72 ± 39,84(482-644) mikron idi.Her üç yöntem ile ölçülen değerler karşılatırıldığında UP ve SF ile elde edilen değerler arasında istatistiki olarak anlamlı fark saptanmaz iken OKT ile elde edilen değerler ile arasında UP(P<0.003) ve SF(P<0.001) ile elde edilen değerler arasında istatistiki olarak anlamlı fark tespit edildi. OKT ile elde edilen değerler daha yüksek bulundu (yaklaşık 7 mikron).
Sonuç: Yapılan SKK ölçümünde UP ve SF ile elde edilen değerler birbirleri ile uyumludur. OKT ile elde edilen değerler daha yüksektir. Günlük uygulamada bu durum dikkate alınmalıdır.
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Keywords
Santral kornea kalınlığı ultrasonik pakimetri Scheimpflug fotograflama optik kohorens tomografi
References
- Pflugfelder SC, Liu Z, Feuer W, et al. Corneal thickı- ness indices discriminate between keratoconus and contact lens-induced corneal thinning. Ophthalmo- logy 2002;109(12):2336-41.
- Al-Mezaine HS, Al-Amro SA, Kangave D, et al. Com- parison between central corneal thickness measure- ments by oculus pentacam and ultrasonic pachymetry. International Ophthalmology. 2008;28(5):333–8.
- Carrasco AJA, Vicent AD, Romín DM, et al. OCT tech- nique for evaluating diurnal variation in corneal thick- ness. Emmetropia 2013;4(4):197-201.
- Şekil II: Optik kohorens tomografi Miglior S, Albe E, Guareschi M, et al. Intraobserver and interobserver reproducibility in the evaluation of ultrasonic pachymetry measurements of central cor- neal thickness. Br J Ophthalmol 2004;88(2):174–7.
- Kawana K, Tokunaga T, Miyata K et al. Comparison of corneal thickness measurements using Orbscan II, noncontact specular microscopy, and ultrasonic pa- chymetry in eyes after laser in situ keratomileusis. Br J Ophthalmol 2004;88(4):466–8.
- Piotrowiak I, Soldanska B, Burduk M, et al. Measu- ring Corneal Thickness with SOCT, the Scheimpflug System, and Ultrasound Pachymetry. ISRN Ophthal- mol 2012:869319.
- Leung DY, Lam DK, Yeung BY, Lam DS. Comparison between central corneal thickness measurements by ultrasound pachymetry and optical coherence tomog- raphy. Clin Experiment Ophthalmol 2006;34(8):751–4.
- Grewal DS, Brar GS, Grewal SP. Assessment of central corneal thickness in normal, keratoconus, and post-la- ser in situ keratomileusis eyes using Scheimpflug ima- ging, spectral domain optical coherence tomography, and ultrasound pachymetry. J Cataract Refract Surg 2010;36(6):954–64
- Fishman GR, Pons ME, Seedor JA, et al. Assessment of central corneal thickness using optical coherence tomography. J Cataract Refract Surg 2005; 31(4):707– 11
- Buyuk K, Bozkurt B, Kamıs U, Ozkagnıcı A, Okudan S. Normal ve Keratokonuslu Gözlerde Ultrasonik Pa- kimetri ve OCULUS Pentacam ile Ölçülen Santral Kor- nea Kalınlıklarının Karşılaştırılması. Turk J Ophthalmol 2011;41(2):104-7.
Details
| Primary Language | Turkish |
|---|---|
| Subjects | Clinical Sciences |
| Journal Section | Articles |
| Authors | |
| Publication Date | July 15, 2015 |
| Published in Issue | Year 2015 Volume: 16 Issue: 2 |
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