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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...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2015
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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. |
format | Online Article Text |
id | pubmed-4633240 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
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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