Comparison of Two Types of Visual Quality Analyzer for the Measurement of High Order Aberrations

Overview

Journal Int J Ophthalmol

Specialty Ophthalmology

Date 2016 Mar 8

PMID 26949654

Citations 10

Authors

Jing Hao

Lin Li

Fang Tian

Hong Zhang

Affiliations

Soon will be listed here.

Abstract

Aim: To compare the difference and agreement of KR-1W and iTrace for measurement of high order aberrations.

Methods: KR-1W and iTrace were respectively used in a group of healthy people (40 volunteers, 32 eyes) to measure the high order aberration (HOA) of corneal, internal and total ocular. The clinical difference and agreement of two instruments were respectively evaluated by paired-samples t-test and Bland-Altman analysis.

Results: The paired-samples t-test showed that the corneal HOA measured by the two instruments had no statistical differences (P>0.05); but the internal and total ocular HOA had significant statistical differences (P<0.05), and the mean results measured by iTrace were higher than that of KR-1W. However, Bland-Altman analysis revealed that the HOA of corneal and internal were all in 95% limits of agreement; and just one point of total ocular HOA was beyond the 95% limits of agreement.

Conclusion: KR-1W and iTrace were consistent well in the measurement of corneal, internal and total ocular HOA, especially for the cornea.

Citing Articles

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