Journals / Glokom Katarakt / 2014 / Cilt: 9 - Sayı: 2

Analysis of Keratometry, Astigmatism and Axis Location Values with Different Instruments in Cataracts Patients

Katarakt Hastalarında Keratometri, Astigmat ve Aks Yerleşim Değerlerinin Farklı Cihazlarla Analizi

Pages
127–132
DOI
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AI Summary & Key Takeaways

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

Therefore, the axis values measured with these devices should not be used interchangably

📌 3 Key Takeaways

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Objective & Hypothesis:Purpose: To compare keratometry, astigmatism and axis values with different instruments in cataract patients and to assess the agreement and correlation between these devices.
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Key Findings & Data:Materials and Methods: 62 eyes of 62 cataracts patients (37 men, 25 women) with a mean age of 64±11 years were included in the study.
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Conclusion & Impact:Therefore, the axis values measured with these devices should not be used interchangably
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Purpose: To compare keratometry, astigmatism and axis values with different instruments in cataract patients and to assess the agreement and correlation between these devices. Materials and Methods: 62 eyes of 62 cataracts patients (37 men, 25 women) with a mean age of 64±11 years were included in the study. Keratometry, astigmatism, axis values of the patients were analysed with autokeratometer, IOL master and Pentacam and The difference, agreement and correlation between the devices were compared statistically. Results: Keratometry values were 43.41±1.58 D (39.75-47.25D), 43.54±1.56 D (39.8-47.44 D), and 43.25±1.61 D (39.1047.10 D), astigmatism values were 0.93±0.93 D (0-4.50 D), 1,10 ±1.08 D (0.23-5.57 D), 0.96±1.00D (0.10-4.40 D) and axis values were 78.250±61.760 , 96.290±59.360 , 86.220±56.170 for autokeratometer, IOL master and Pentacam, respectively. Keratometry and astigmatism values measured with these 3 devices showed good agreement, correlation and repeatability (interclass correlation coefficients for all the values above 0.90). However, the relationship in axial location values were found to be weaker (interclass correlation coefficients values below 0.90). Conclusion: Keratometry and astigmatism measured with these three devices show good agreement, correlation and repeatbility. However, axis location values were weaker compared to other measurements. Therefore, the axis values measured with these devices should not be used interchangably

Özet

Amaç: Katarakt hastalarında farklı cihazlarla ölçülen keratometri, astigmat ve aks değerlerini karşılaştırmak ve bu cihazların birbirleriyle olan uyum ve korelasyonunu değerlendirmek. Gereç ve Yöntem: Çalışmaya, ortalama yaşı 64±11 olan, katarakt cerrahisi planlanan 62 hastanın (37 erkek ve 25 kadın) 62 kataraktlı gözü dahil edildi. Hastaların, pentacam, otokeratometre ve IOL master ile keratometri, astigmat ve aks değerleri analiz edildi ve cihazlar arası farklılık, uyum ve korelasyon istatistiksel olarak karşılaştırıldı. Bulgular: Otokeratometre, IOL master ve pentacam için sırasıyla, keratometri değerleri 43.41±1.58 D (39.75-47.25D), 43.54±1.56 D (39.8-47.44 D), 43.25±1.61 D (39.10-47.10 D), astigmat değerleri 0.93±0.93 D (0-4.50 D), 1,10 ±1.08 D (0.235.57 D), 0.96±1.00D (0.10-4.40 D), aks değerleri 78.250±61.760 , 96.290±59.360 , 86.220±56.170 idi. Üç cihazla ölçülen keratometri ve astigmat değerleri birbirleriyle iyi bir uyum, korelasyon ve tekrarlanabilirlik gösterdi. (sınıf içi korelasyon katsayıları bütün değerler için 0.90 ve üzerinde). Ancak, aks yönü değerlerinde bu ilişki daha zayıf olarak tespit edildi (sınıf içi korelasyon katsayıları 0.71 ve altında) Sonuç: Katarakt hastalarında, cerrahi öncesi her üç cihazla ölçülen keratometri ve astigmat değerleri iyi bir uyum, korelasyon ve tekrarlanabilirlik göstermektedir. Ancak, aks yönlerinde uyum, korelasyon ve tekrarlanabilirlik diğer ölçümlere göre daha zayıftır. Bu nedenle, bu cihazlarla ölçülen aks değerleri birbirinin yerine kullanılmamalıdır

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Cite This Article

ATAŞ, M., GÖKTAŞ, A., DEMİRCAN, S., PANGAL, E., GÜLHAN, A., ZARARSIZ, G. (2014). Analysis of Keratometry, Astigmatism and Axis Location Values with Different Instruments in Cataracts Patients. Glokom Katarakt, Cilt: 9 - Sayı: 2, 127–132. https://ajindex.com/articles/205982

References (14)

  1. Hoffer KJ. Biometry of 7,500 cataractous eyes. Am J Ophthalmol 1980;90:360-8.
  2. Ferrer-Blasco T, Montes-Mico R, Peixoto-de-Matos SC, et al. Prev- alence of corneal astigmatism before cataract surgery. J Cataract Refract Surg 2009;35:70-5.
  3. Hoffmann PC, Hütz WW. Analysis of biometry and prevalence data for corneal astigmatism in 23,239 eyes. J Cataract Refract Surg 2010;36:1479-85.
  4. Ünlü C, Turan Vural E, Erdoğan G, ve ark. Katarakt cerrahisi hastalarımızda astigmatik profilin değerlendirilmesi. Glo-Kat 2010;5:199-202. Nichamin LD. Astigmatism control. Ophtalmol Clin N Am 2006;19:485-93.
  5. Amigo A, Giebel AW, Muinos JA. Astigmatic keratotomy effect of single-hinge, clear corneal incisions using various preincision lengths. J Cataract Refract Surg 1998;24:765-71.
  6. Lyhne N, Hansen TE, Corydon L. Relationship between preop- erative axis of astigmatism and postoperative astigmatic change after superior scleral incision phacoemulsification. J Cataract Re- fract Surg 1998;24:935-9.
  7. Akura J, Matsuura K, Hatta S, et al. A new concept for the cor- rection of astigmatism: full-arc, depth-dependent astigmatic kera- totomy. Ophthalmology 2000;107:95-104.
  8. Shimizu K, Misawa A, Suzuki Y. Toric intraocular lenses: correct- ing astigmatism while controlling axis shift. J Cataract Refract Surg 1994;20:523-6.
  9. Mendicute J, Irigoyen C, Aramberri J, et al. Foldable toric intra- ocular lens for astigmatism correction in cataract patients. J Cata- ract Refract Surg 2008;34:601-7. Bauer NJC, de Vries NE, Webers CA, et al. Astigmatism manage- ment in cataract surgery with the AcrySof toric in traocular lens. J Cataract Refract Surg 2008;34:1483-8. Horn JD. Status of toric intraocular lenses. Curr Opin Ophthal- mol 2007;18:58-61.
  10. Davies LN, Mallen EA, Wolffsohn JS, et al. Clini cal evaluation of the Shin-Nippon NVision-K 5001/Grand Seiko WR-5100K autore- fractor. Optom Vis Sci 2003;80:320-4.
  11. Gonzalez-Meijome JM, Jorge J, Queiros A, et al. A com parison of the ARK-700A autokeratometer and Medmont E300 corneal topographer when measuring peripheral cor neal curvature. Oph- thalmic Physiol Opt 2004;24:391-8.
  12. Sheppard AL, Davies LN. Clinical evaluation of the Grand Seiko Auto Ref/Keratometer WAM-5500. Ophthalmic Physiol Opt 2010;30:143-51.
  13. Shankar H, Taranath D, Santhirathelagan CT, et al. Anterior segment biometry with the Pentacam: compre hensive assessment of repeatability of automated measure ments. J Cataract Refract Surg 2008;34:103-13.
  14. Connors R, Boseman P, Olson RJ. Accuracy and reproduc