Agreement of gonioscopy and anterior segment-optical coherence tomography in the assessment of the anterior chamber angle: A cross-sectional study
Purpose: The aim of the study was to evaluate the inter instrument agreement between gonioscopy and anterior segment optical coherence tomography (AS-OCT) in the assessment of the anterior chamber angle (ACA) in eyes with all Van Herick's grades. Methods: A single examiner performed AS-OCT and...
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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 |
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| Online Access: | http://www.kjophthal.com/article.asp?issn=0976-6677;year=2022;volume=34;issue=1;spage=27;epage=31;aulast=Jaseena |
| _version_ | 1828350816525746176 |
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| author | K Jaseena P S Rekha |
| author_facet | K Jaseena P S Rekha |
| author_sort | K Jaseena |
| collection | DOAJ |
| description | Purpose: The aim of the study was to evaluate the inter instrument agreement between gonioscopy and anterior segment optical coherence tomography (AS-OCT) in the assessment of the anterior chamber angle (ACA) in eyes with all Van Herick's grades. Methods: A single examiner performed AS-OCT and gonioscopy with a Goldman single mirror for all study patients. An angle opening distance at 500 μm from the scleral spur in the AS-OCT was considered as the quantitative parameter to assess the ACA. A closed ACA on AS-OCT was defined by the presence of any contact between the iris and angle wall anterior to scleral spur. The agreement between gonioscopy and AS-OCT of the nasal and temporal angles was estimated using the Kappa statistic and the concordance between the instruments using the Lin's concordance coefficient. Results: The mean age of the seventy participants in the study was 52.11 ± 5.37 years. Five (15.15%) of nasal angles and 4 (12.12%) of temporal angles identified as closed by gonioscopy were called as open by AS-OCT. The Kappa statistic (0.59), pairwise correlation (0.60), and Lin's concordance correlation coefficient (0.59) showed only moderate agreement and concordance between AS-OCT and gonioscopy. AS-OCT had a moderate sensitivity (73%) and better specificity (86.4%). Conclusion: The results of our study show that AS-OCT can be used as a clinical diagnostic test but has limited use as a screening test for ACA. The significant proportion of subjects with a mismatch in the categorization of open and closed ACA and the moderate agreement highlights the need for better objective diagnostic criteria for closed ACA. |
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| format | Article |
| id | doaj.art-de62a3f5321c49f8b759fc97797ab541 |
| institution | Directory Open Access Journal |
| issn | 0976-6677 |
| language | English |
| last_indexed | 2024-04-14T01:30:28Z |
| publishDate | 2022-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Kerala Journal of Ophthalmology |
| spelling | doaj.art-de62a3f5321c49f8b759fc97797ab5412022-12-22T02:20:12ZengWolters Kluwer Medknow PublicationsKerala Journal of Ophthalmology0976-66772022-01-01341273110.4103/kjo.kjo_91_21Agreement of gonioscopy and anterior segment-optical coherence tomography in the assessment of the anterior chamber angle: A cross-sectional studyK JaseenaP S RekhaPurpose: The aim of the study was to evaluate the inter instrument agreement between gonioscopy and anterior segment optical coherence tomography (AS-OCT) in the assessment of the anterior chamber angle (ACA) in eyes with all Van Herick's grades. Methods: A single examiner performed AS-OCT and gonioscopy with a Goldman single mirror for all study patients. An angle opening distance at 500 μm from the scleral spur in the AS-OCT was considered as the quantitative parameter to assess the ACA. A closed ACA on AS-OCT was defined by the presence of any contact between the iris and angle wall anterior to scleral spur. The agreement between gonioscopy and AS-OCT of the nasal and temporal angles was estimated using the Kappa statistic and the concordance between the instruments using the Lin's concordance coefficient. Results: The mean age of the seventy participants in the study was 52.11 ± 5.37 years. Five (15.15%) of nasal angles and 4 (12.12%) of temporal angles identified as closed by gonioscopy were called as open by AS-OCT. The Kappa statistic (0.59), pairwise correlation (0.60), and Lin's concordance correlation coefficient (0.59) showed only moderate agreement and concordance between AS-OCT and gonioscopy. AS-OCT had a moderate sensitivity (73%) and better specificity (86.4%). Conclusion: The results of our study show that AS-OCT can be used as a clinical diagnostic test but has limited use as a screening test for ACA. The significant proportion of subjects with a mismatch in the categorization of open and closed ACA and the moderate agreement highlights the need for better objective diagnostic criteria for closed ACA.http://www.kjophthal.com/article.asp?issn=0976-6677;year=2022;volume=34;issue=1;spage=27;epage=31;aulast=Jaseenaagreementanterior chamber anglesconcordanceglaucomagonioscopyoptical coherence tomography |
| spellingShingle | K Jaseena P S Rekha Agreement of gonioscopy and anterior segment-optical coherence tomography in the assessment of the anterior chamber angle: A cross-sectional study Kerala Journal of Ophthalmology agreement anterior chamber angles concordance glaucoma gonioscopy optical coherence tomography |
| title | Agreement of gonioscopy and anterior segment-optical coherence tomography in the assessment of the anterior chamber angle: A cross-sectional study |
| title_full | Agreement of gonioscopy and anterior segment-optical coherence tomography in the assessment of the anterior chamber angle: A cross-sectional study |
| title_fullStr | Agreement of gonioscopy and anterior segment-optical coherence tomography in the assessment of the anterior chamber angle: A cross-sectional study |
| title_full_unstemmed | Agreement of gonioscopy and anterior segment-optical coherence tomography in the assessment of the anterior chamber angle: A cross-sectional study |
| title_short | Agreement of gonioscopy and anterior segment-optical coherence tomography in the assessment of the anterior chamber angle: A cross-sectional study |
| title_sort | agreement of gonioscopy and anterior segment optical coherence tomography in the assessment of the anterior chamber angle a cross sectional study |
| topic | agreement anterior chamber angles concordance glaucoma gonioscopy optical coherence tomography |
| url | http://www.kjophthal.com/article.asp?issn=0976-6677;year=2022;volume=34;issue=1;spage=27;epage=31;aulast=Jaseena |
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