Repeatability and reproducibility of horizontal corneal diameter and anterior corneal power measurements using the Oculus Keratograph 4

African Vision and Eye Health

 
 
Field Value
 
Title Repeatability and reproducibility of horizontal corneal diameter and anterior corneal power measurements using the Oculus Keratograph 4
 
Creator Mashige, Khathutshelo P.
 
Subject optometry Oculus Keratograph 4; repeatability; reproducibility; horizontal corneal diameter; anterior corneal power
Description Purpose: To evaluate the repeatability and reproducibility of horizontal corneal diameter (HCD) and anterior corneal power (ACP) measurements obtained with the Oculus Keratograph 4 (OCULUS Optikgeräte GmbH).Methods: These parameters (HCD and ACP) were prospectively measured in quick succession three times in each of the right eyes of 40 healthy subjects, aged 18–28 years, with normal vision (6/6 or better visual acuity) in the first session by a single examiner. Measurements were then repeated in the second session scheduled 1 week later by the same examiner using the same instrument. Repeatability and reproducibility of HCD and ACP measurements was assessed based on the intra-session and intersession within-subject standard deviation (sw), repeatability (2.77sw), coefficient of variation (CoV) and intra-class correlation coefficient (ICC).Results: Intra-session repeatability and intersession reproducibility of all measured parameters showed a repeatability (2.77sw) of 0.35 mm or less for HCD and 0.35 D or less for ACP, a CoV of 0.30% or less and an ICC of more than 0.9.Conclusion: HCD and ACP measurements obtained using an Oculus Keratograph 4 show good repeatability and reproducibility in healthy eyes; therefore, these parameters can be used for longitudinal follow-up when measured with this device.
 
Publisher AOSIS
 
Contributor —
Date 2016-08-19
 
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — experimental research
Format text/html application/octet-stream text/xml application/pdf
Identifier 10.4102/aveh.v75i1.350
 
Source African Vision and Eye Health; Vol 75, No 1 (2016); 5 pages 2410-1516 2413-3183
 
Language eng
 
Relation
The following web links (URLs) may trigger a file download or direct you to an alternative webpage to gain access to a publication file format of the published article:

https://avehjournal.org/index.php/aveh/article/view/350/582 https://avehjournal.org/index.php/aveh/article/view/350/583 https://avehjournal.org/index.php/aveh/article/view/350/584 https://avehjournal.org/index.php/aveh/article/view/350/572
 
Coverage south africa — 18-28, both genders
Rights Copyright (c) 2016 Khathutshelo P. Mashige https://creativecommons.org/licenses/by/4.0
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