To determine the validity in corneal thickness measurement between ultrasound pachymetry (US), Scheimpflug imaging (Pentacam, Oculus) and scanning-slit topography (ORBSCAN II, Bausch & Lomb) in Hyperopic eyes after LASEK surgery

Document Type : Original article

Authors

1 1. Student Research Commeittee. MSc of Optometry, Faculty of Rehabilitation Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran

2 2. Professor of Ophthalmology. Faculty of Rehabilitation Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran

3 3. Professor of Ophthalmology. Faculty of Medicine, Tehram University of Medical Sciences, Tehran, Iran

4 4. OD, Dept. Of Optometry, Faculty of Rehabilitation Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran

5 5. MSc in Biostatistics, Faculty of Rehabilitation Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Abstract

Background and Aim: To determine the validity in central corneal thickness (CCT) peripheral corneal thickness (PCT) measured by Scheimpflug imaging (Pentacam, Oculus) and scanning-slit topography (ORBSCAN II, Bausch & Lomb) with that by gold standard method of ultrasound (US) in Hyperopic eyes after LASEK surgery.
Materials and Methods: the present study which was based on descriptive and analytic census that carried out in hyperopic patients who undergone LASEK eye surgery in Farabi eye hospital in 2012 and collection of samples lasted for 9 months. The subjects were inspect by ultrasound (US), Scheimpflug imaging ( Pentacam ,Oculus) and scanning-slit topography (ORBSCAN II, Bausch & Lomb) .statistical analysis of collected data was performed using SPSS software version 18 and T-2test method.  
Results: CT and PCT were evaluated in 28 eyes. CCT measured by Orbscan II had good correlation with those measured by ultrasound pachymetry(r=0.083 and p<0.05) also Orbscan II had good correlation in CCT measurement with Pentacam HR (pConclusion: Pentacam HR and ORBSCAN II showed good correlation with US in CCT measurement but in PCT measurement Pentacam HR had better correlation comparing with ORBSCAN II for hyperopic patient after LASEK refractive surgery

Keywords

References

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The Scientific Journal of Rehabilitation Medicine
Volume 3, Issue 1 - Serial Number 1
March and April 2014
Pages 1-7

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History

  • Receive Date: 05 December 2013
  • Revise Date: 06 February 2014
  • Accept Date: 06 March 2014
  • First Publish Date: 21 March 2014

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