comparison of central corneal thickness measured by anterior segment optical coherence tomography, pentacam and ultrasonic pachymetry

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2013
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Abstract
AIM: To investigate and analyze the differences in central corneal thickness(CCT)measurement by anterior segment optical coherence tomography(AS-OCT), pentacam rotating Scheimpflug camera and ultrasonic pachymetry(USP).

METHODS: The retrospective study measured CCT of 43 patients(86 eyes)performed excimer laser myopia corrective surgery by the same examiner using RTVue AS-OCT with an anterior segment adaptor, pentacam rotating Scheimpflug camera, and PACSCAN300P USP. Data of three groups were compared and statistically analyzed by pair t test.

RESULTS: The mean CCT(±SD)measured by AS-OCT,pentacam and USP were 535±52, 550±52, 550±51μm, respectively. Paired-sample t test showed that the results of AS-OCT, pentacam and USP were statistically different. There were no statistically significant differences in the mean CCT between the pentacam and USP group. Significant correlations of measurement result were found between pentacam and USP(r=0.998, P<0.01), FD-OCT and USP(r=0.993, P<0.01), and AS-OCT and pentacam(r=0.991, P<0.01).

CONCLUSION:RTVue AS-OCT significantly under estimates the CCT, while the measurement results by pentacam are similar to those by USP which is regarded as the golden standard.

Reference Key
zhao2013guojicomparison Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Wei Zhao;Ting Wu;Ze-Hong Dong;Jie Feng;Yu-Feng Ren;Yu-Sheng Wang
Journal journal of fungi
Year 2013
DOI
10.3980/j.issn.1672-5123.2013.12.59
URL
http://www.ies.net.cn/cn_publish/2013/12/201312059.pdf
Keywords Keywords not found

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