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Intra- and Intersession Repeatability of an Optical Quality and Intraocular Scattering Measurement System in Children

PURPOSE: To evaluate intra- and intersession repeatability of objective optical quality and intraocular scattering measurements with a double-pass system in children. METHODS: Forty-two eyes of 42 children were included in the study. An optical quality analysis system (OQAS) was used to measure opti...

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Autores principales: Tian, Mi, Miao, Huamao, Shen, Yang, Gao, Jian, Mo, Xiaofen, Zhou, Xingtao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4633240/
https://www.ncbi.nlm.nih.gov/pubmed/26536120
http://dx.doi.org/10.1371/journal.pone.0142189
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author Tian, Mi
Miao, Huamao
Shen, Yang
Gao, Jian
Mo, Xiaofen
Zhou, Xingtao
author_facet Tian, Mi
Miao, Huamao
Shen, Yang
Gao, Jian
Mo, Xiaofen
Zhou, Xingtao
author_sort Tian, Mi
collection PubMed
description PURPOSE: To evaluate intra- and intersession repeatability of objective optical quality and intraocular scattering measurements with a double-pass system in children. METHODS: Forty-two eyes of 42 children were included in the study. An optical quality analysis system (OQAS) was used to measure optical quality parameters, including modulation transfer function cutoff frequency (MTF(cutoff)), Strehl ratio (SR), OQAS values (OV) at 3 different contrasts and objective scatter index (OSI). Three measurement sessions with 10-min intervals were operated by the same technician, and in each session four consecutive measurements were obtained. RESULTS: Mean values for MTF(cutoff), SR and OSI were 46.85 ± 7.45cpd, 0.27 ± 0.06 and 0.34 ± 0.22 respectively. 1) The intraclass correlation coefficients were ranged from 0.89 to 0.97 and coefficients of variation from 0.06 to 0.16 for all the parameters in the first session; the relative repeatability were 11.1% (MTF(cutoff)), 22.5% (SR), 10.9% (OV100%), 16.6% (OV2%), 22.4% (OV9%) and 56.3% (OSI). Similar results were found in the second and third sessions. 2) Bland-Altman analysis showed that narrow 95% confidence intervals (compared between the first and second sessions) ranged from -5.42 to 5.28 (MTF(cutoff)), -0.05 to 0.07 (SR), -0.18 to 0.18 (OV100%), -0.26 to 0.29 (OV20%), -0.33 to 0.39 (OV9%) and -0.11 to 0.09 (OSI); the comparison between any two of the three sessions showed similar results. CONCLUSION: Measurements of optical quality and intraocular scattering in children by the double-pass system showed good intra- and intersession repeatability. Retinal image quality is high and intraocular scattering is low in children.
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spelling pubmed-46332402015-11-13 Intra- and Intersession Repeatability of an Optical Quality and Intraocular Scattering Measurement System in Children Tian, Mi Miao, Huamao Shen, Yang Gao, Jian Mo, Xiaofen Zhou, Xingtao PLoS One Research Article PURPOSE: To evaluate intra- and intersession repeatability of objective optical quality and intraocular scattering measurements with a double-pass system in children. METHODS: Forty-two eyes of 42 children were included in the study. An optical quality analysis system (OQAS) was used to measure optical quality parameters, including modulation transfer function cutoff frequency (MTF(cutoff)), Strehl ratio (SR), OQAS values (OV) at 3 different contrasts and objective scatter index (OSI). Three measurement sessions with 10-min intervals were operated by the same technician, and in each session four consecutive measurements were obtained. RESULTS: Mean values for MTF(cutoff), SR and OSI were 46.85 ± 7.45cpd, 0.27 ± 0.06 and 0.34 ± 0.22 respectively. 1) The intraclass correlation coefficients were ranged from 0.89 to 0.97 and coefficients of variation from 0.06 to 0.16 for all the parameters in the first session; the relative repeatability were 11.1% (MTF(cutoff)), 22.5% (SR), 10.9% (OV100%), 16.6% (OV2%), 22.4% (OV9%) and 56.3% (OSI). Similar results were found in the second and third sessions. 2) Bland-Altman analysis showed that narrow 95% confidence intervals (compared between the first and second sessions) ranged from -5.42 to 5.28 (MTF(cutoff)), -0.05 to 0.07 (SR), -0.18 to 0.18 (OV100%), -0.26 to 0.29 (OV20%), -0.33 to 0.39 (OV9%) and -0.11 to 0.09 (OSI); the comparison between any two of the three sessions showed similar results. CONCLUSION: Measurements of optical quality and intraocular scattering in children by the double-pass system showed good intra- and intersession repeatability. Retinal image quality is high and intraocular scattering is low in children. Public Library of Science 2015-11-04 /pmc/articles/PMC4633240/ /pubmed/26536120 http://dx.doi.org/10.1371/journal.pone.0142189 Text en © 2015 Tian et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Tian, Mi
Miao, Huamao
Shen, Yang
Gao, Jian
Mo, Xiaofen
Zhou, Xingtao
Intra- and Intersession Repeatability of an Optical Quality and Intraocular Scattering Measurement System in Children
title Intra- and Intersession Repeatability of an Optical Quality and Intraocular Scattering Measurement System in Children
title_full Intra- and Intersession Repeatability of an Optical Quality and Intraocular Scattering Measurement System in Children
title_fullStr Intra- and Intersession Repeatability of an Optical Quality and Intraocular Scattering Measurement System in Children
title_full_unstemmed Intra- and Intersession Repeatability of an Optical Quality and Intraocular Scattering Measurement System in Children
title_short Intra- and Intersession Repeatability of an Optical Quality and Intraocular Scattering Measurement System in Children
title_sort intra- and intersession repeatability of an optical quality and intraocular scattering measurement system in children
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4633240/
https://www.ncbi.nlm.nih.gov/pubmed/26536120
http://dx.doi.org/10.1371/journal.pone.0142189
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