Abstract
Purpose: To determine the mean difference of central corneal thickness
measurements by using ultrasound Pachymetry and oculus Wave light
Occulyzer II.
Study Design: Cross-sectional comparative study using non-probability
consecutive sampling.
Place and Duration of Study: This study was conducted at Department of
Ophthalmology, Liaquat National Hospital Karachi from November 2018 to June
2019.
Material & Methods: After approval from ethical committee, patients were
included in our study on the basis of inclusion & exclusion criteria. Central
corneal thickness measurements were taken by using ultrasound Pachymetry &
oculus Wave light Occulyzer II. All the data was collected by single researcher.
The results were plotted, compared & analyzed. Paired t-test was used for the
comparison of quantitative variables.
Results: There were 130 patients included in the study out of which 73 (56.2%)
were males and 57 (43.8%) were females. Mean age of these patients was
33.9 ± 8.9 years. The mean ± SD thinnest oculus Wave light Occulyzer II
measurement was 538.61 ± 23.46 μm and ranged between 476.0 and 619.0 μm
whereas the mean thinnest ultrasound Pachymetry measurement was 535.1 ±
21.816 μm and ranged between 482 and 601 μm. There was highly significant
correlation of central corneal thickness between both the instruments. (r = 0.96,
p < 0.001).
Conclusion: There is a high correlation of central corneal thickness between the
readings obtained from ultrasound and optical pachymetry machines therefore
oculus Wave light Occulyzer II can be used as an alternative technique to
ultrasound pachymetry while assessing CCT in clinical settings.
Munira Shakir, Ronak Afza Memon, Sahira Wasim, Shakir Zafar. (2019) Difference in Central Corneal Thickness between Applanation Ultrasound and Oculus Wave Light Occulyzer II, Pakistan Journal of Ophthalmology, Volume 35, Issue 3.
-
Views
1002 -
Downloads
79
