Evaluation of quality of non-mydriatic fundus images obtained with non-contact TrueColor, confocal scanner during third phase of nationwide lockdown
Aims: This study aims to evaluate the non-mydriatic fundus image quality obtained with a confocal fundus device. Also, to evaluate the influence of non-mydriatic pupil size on image quality. Settings and Design: A cross-sectional study was conducted in the outpatient department of a high-volume tert...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2022-01-01
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| Series: | Kerala Journal of Ophthalmology |
| Subjects: | |
| Online Access: | http://www.kjophthal.com/article.asp?issn=0976-6677;year=2022;volume=34;issue=3;spage=216;epage=226;aulast=Ramesh |
| _version_ | 1828065945895043072 |
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| author | Prasanna Venkatesh Ramesh Shruthy Vaishali Ramesh Anugraha Balamurugan Sheik Mohamed Ansar Aji Kunnath Devadas Meena Kumari Ramesh Ramesh Rajasekaran |
| author_facet | Prasanna Venkatesh Ramesh Shruthy Vaishali Ramesh Anugraha Balamurugan Sheik Mohamed Ansar Aji Kunnath Devadas Meena Kumari Ramesh Ramesh Rajasekaran |
| author_sort | Prasanna Venkatesh Ramesh |
| collection | DOAJ |
| description | Aims: This study aims to evaluate the non-mydriatic fundus image quality obtained with a confocal fundus device. Also, to evaluate the influence of non-mydriatic pupil size on image quality. Settings and Design: A cross-sectional study was conducted in the outpatient department of a high-volume tertiary eye care centre in South India during the third phase of the COVID-19 lockdown. Subjects and Methods: 831 consenting, consecutive patients (1539 eyes) were photographed from May 5 to May 17, 2020, and were graded excellent, fair, adequate, or inadequate; based on white noise, black noise, and image acquisition signals. Pupil diameters were obtained with light-emitting diode flash technology. Statistical Analysis: The collected data were analyzed using SPSS software. Descriptive statistics in the form of frequencies and percentages were calculated. Simple (univariate) linear regression analysis and adjusted regression analysis were used to establish the relationship between pupil size and fundus photo quality. Results: The quality of the fundus photo was excellent in 70.12% (n = 1079), fair in 15.72% (n = 242), adequate in 5.78% (n = 89), and inadequate in 8.38% (n = 129). Of the 1410 obtained images (subtracting the inadequate quality images), 87.66% (n = 1236) were normal and 12.34% (n = 174) were pathological. There was a positive linear relationship between pupil size and quality of retinal photograph; OS (R2 = 0.935) had a slightly better association than OD (R2 = 0.901). Conclusions: The majority of the confocal images were excellent in quality. Our four-point grading system serves as a reliable measure of non-mydriatic photograph quality. Pupil size is a significant predictor of image quality for non-mydriatic photographs in surveillance programs. |
| first_indexed | 2024-04-10T23:23:14Z |
| format | Article |
| id | doaj.art-86a0f13e512743a7a91a63e263a56c9a |
| institution | Directory Open Access Journal |
| issn | 0976-6677 |
| language | English |
| last_indexed | 2024-04-10T23:23:14Z |
| publishDate | 2022-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Kerala Journal of Ophthalmology |
| spelling | doaj.art-86a0f13e512743a7a91a63e263a56c9a2023-01-12T13:28:01ZengWolters Kluwer Medknow PublicationsKerala Journal of Ophthalmology0976-66772022-01-0134321622610.4103/kjo.kjo_58_21Evaluation of quality of non-mydriatic fundus images obtained with non-contact TrueColor, confocal scanner during third phase of nationwide lockdownPrasanna Venkatesh RameshShruthy Vaishali RameshAnugraha BalamuruganSheik Mohamed AnsarAji Kunnath DevadasMeena Kumari RameshRamesh RajasekaranAims: This study aims to evaluate the non-mydriatic fundus image quality obtained with a confocal fundus device. Also, to evaluate the influence of non-mydriatic pupil size on image quality. Settings and Design: A cross-sectional study was conducted in the outpatient department of a high-volume tertiary eye care centre in South India during the third phase of the COVID-19 lockdown. Subjects and Methods: 831 consenting, consecutive patients (1539 eyes) were photographed from May 5 to May 17, 2020, and were graded excellent, fair, adequate, or inadequate; based on white noise, black noise, and image acquisition signals. Pupil diameters were obtained with light-emitting diode flash technology. Statistical Analysis: The collected data were analyzed using SPSS software. Descriptive statistics in the form of frequencies and percentages were calculated. Simple (univariate) linear regression analysis and adjusted regression analysis were used to establish the relationship between pupil size and fundus photo quality. Results: The quality of the fundus photo was excellent in 70.12% (n = 1079), fair in 15.72% (n = 242), adequate in 5.78% (n = 89), and inadequate in 8.38% (n = 129). Of the 1410 obtained images (subtracting the inadequate quality images), 87.66% (n = 1236) were normal and 12.34% (n = 174) were pathological. There was a positive linear relationship between pupil size and quality of retinal photograph; OS (R2 = 0.935) had a slightly better association than OD (R2 = 0.901). Conclusions: The majority of the confocal images were excellent in quality. Our four-point grading system serves as a reliable measure of non-mydriatic photograph quality. Pupil size is a significant predictor of image quality for non-mydriatic photographs in surveillance programs.http://www.kjophthal.com/article.asp?issn=0976-6677;year=2022;volume=34;issue=3;spage=216;epage=226;aulast=Rameshconfocal fundus scanningfundus imaging qualitynon-mydriatic imagespupil size |
| spellingShingle | Prasanna Venkatesh Ramesh Shruthy Vaishali Ramesh Anugraha Balamurugan Sheik Mohamed Ansar Aji Kunnath Devadas Meena Kumari Ramesh Ramesh Rajasekaran Evaluation of quality of non-mydriatic fundus images obtained with non-contact TrueColor, confocal scanner during third phase of nationwide lockdown Kerala Journal of Ophthalmology confocal fundus scanning fundus imaging quality non-mydriatic images pupil size |
| title | Evaluation of quality of non-mydriatic fundus images obtained with non-contact TrueColor, confocal scanner during third phase of nationwide lockdown |
| title_full | Evaluation of quality of non-mydriatic fundus images obtained with non-contact TrueColor, confocal scanner during third phase of nationwide lockdown |
| title_fullStr | Evaluation of quality of non-mydriatic fundus images obtained with non-contact TrueColor, confocal scanner during third phase of nationwide lockdown |
| title_full_unstemmed | Evaluation of quality of non-mydriatic fundus images obtained with non-contact TrueColor, confocal scanner during third phase of nationwide lockdown |
| title_short | Evaluation of quality of non-mydriatic fundus images obtained with non-contact TrueColor, confocal scanner during third phase of nationwide lockdown |
| title_sort | evaluation of quality of non mydriatic fundus images obtained with non contact truecolor confocal scanner during third phase of nationwide lockdown |
| topic | confocal fundus scanning fundus imaging quality non-mydriatic images pupil size |
| url | http://www.kjophthal.com/article.asp?issn=0976-6677;year=2022;volume=34;issue=3;spage=216;epage=226;aulast=Ramesh |
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