Repeatability and agreement of five imaging systems for measuring anterior segment parameters in healthy eyes

Indian Journal of Ophthalmology
Mukesh KumarDebarun Dutta

Abstract

The purpose of this study is to assess the repeatability and agreement of five imaging devices, namely, the Pentacam (Oculus), Sirius (CSO), Orbscan IIz (Bausch and Lomb), Corvis (Oculus), and ultrasound pachymetry (UP, Tomey) in measuring steep keratometry (sKm), flat keratometry (fKm), central corneal thickness (CCT), thinnest corneal thickness (TCT), and anterior chamber depth (ACD) in healthy individuals. This was prospective, comparative study. Forty-six healthy Indian patients. Forty-six eyes of 46 healthy participants underwent three consecutive scans on each device by a single examiner. Within-subject standard deviation, test-retest repeatability (TRT), and coefficient of variation (COV) for assessing repeatability and Bland-Altman plots for the agreement between the mean measurements of each machine were analyzed. The repeatability and agreement between the five devices for the measurements of sKm, fKm, CCT, TCT, and ACD. The TRT of sKm measurements ranged between 0.23 diopter (D) (with Pentacam) and 0.83 D (with Orbscan). The same of fKm, TCT, ACD, and CCT measurements ranged between 0.28 D (with Pentacam) and 0.74 D (with Sirius), 7.78 μm (Sirius) and 19.81 μm (Orbscan), 0.05 mm (Orbscan) and 0.07 (Sirius), and 7.36 ...Continue Reading

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Citations

Dec 22, 2017·Clinical & Experimental Ophthalmology·Rachel FanVishal Jhanji
Dec 7, 2017·Indian Journal of Ophthalmology·Manpreet KaurJeewan S Titiyal
Sep 5, 2019·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·David P PiñeroMaría Teresa Caballero
Jan 29, 2020·Cornea·Hesham Mohamed GhariebRania Serag Elkitkat
Dec 12, 2018·Journal of Ophthalmology·Maged Maher Salib RoshdyRamy Riad Fikry
Mar 30, 2020·International Ophthalmology·Hesham Mohamed GhariebIhab Saad Othman
Nov 25, 2020·Indian Journal of Ophthalmology·Mohita SharmaVaitheeswaran G Lalgudi
Apr 30, 2021·Indian Journal of Ophthalmology·Mohita SharmaVaitheeswaran Ganesan Lalgudi
May 27, 2021·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·James S WolffsohnUNKNOWN members of the British and Irish University and College Contact Lens Educators (BUCCLE) group
Aug 4, 2021·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Michael J Doughty
Oct 9, 2021·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Sayantan Biswas, Partha Biswas
Dec 2, 2021·European Journal of Ophthalmology·Ayşe Yağmur Kanra, Haşim Uslu

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Software Mentioned

Sirius
Orbscan
Statistical Package for the Social Sciences

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