Validation of a modified ETDRS chart for European-wide use in populations that use the Cyrillic, Latin or Greek alphabet
Purpose: To validate a modified ETDRS visual acuity (VA) chart developed for European-wide use, in populations that use the Cyrillic, Latin or Greek alphabet. Methods: The charts were validated in three groups: 310 school children in Bulgaria (mean age 13 ± 1 years), 227 school children in Greece (m...
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| Format: | Article |
| Language: | English |
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Elsevier
2013-01-01
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| Series: | Journal of Optometry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1888429612000817 |
| _version_ | 1818519502327906304 |
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| author | Sotiris Plainis Joanna Moschandreas Trisevgeni Giannakopoulou Vania Vitanova Panagoula Nikolitsa Jos J. Rozema Marie-José Tassignon Miltiadis K. Tsilimbaris Ioannis G. Pallikaris |
| author_facet | Sotiris Plainis Joanna Moschandreas Trisevgeni Giannakopoulou Vania Vitanova Panagoula Nikolitsa Jos J. Rozema Marie-José Tassignon Miltiadis K. Tsilimbaris Ioannis G. Pallikaris |
| author_sort | Sotiris Plainis |
| collection | DOAJ |
| description | Purpose: To validate a modified ETDRS visual acuity (VA) chart developed for European-wide use, in populations that use the Cyrillic, Latin or Greek alphabet.
Methods: The charts were validated in three groups: 310 school children in Bulgaria (mean age 13 ± 1 years), 227 school children in Greece (mean age 14 ± 1 years) and 85 patients with no ocular pathology in Belgium (mean age 26 ± 5 years). VA was assessed with the habitual refractive correction, using the standard ETDRS charts and the modified European-wide charts. The intra-class correlation coefficient (ICC) was used to assess the test–retest reliability of the European-wide chart. The Bland–Altman comparison method was used to assess agreement between the two different versions of the new chart, as well as to compare these to the standard ETDRS-charts. Limits of agreement were calculated for differences in VA scores (test–retest variability (TRV)) between measurement sessions for the European-wide charts.
Results: The TRV of the European-wide charts was found to be ±0.10 logMAR, corresponding to 5 ETDRS letters, for both chart 1 and chart 2. The ICC was estimated to be 0.968 for the RE and 0.961 for the LE. The European-wide charts generated on average slightly higher logMAR scores compared to the standard ETDRS charts in all three groups.
Conclusions: The “European-wide” charts appear to be a valid alternative to the standard ETDRS acuity charts, offering the advantage of containing letters readable by all European citizens. |
| first_indexed | 2024-12-11T01:25:03Z |
| format | Article |
| id | doaj.art-afda788df11c4713a1953cbde6b01b92 |
| institution | Directory Open Access Journal |
| issn | 1888-4296 |
| language | English |
| last_indexed | 2024-12-11T01:25:03Z |
| publishDate | 2013-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Optometry |
| spelling | doaj.art-afda788df11c4713a1953cbde6b01b922022-12-22T01:25:35ZengElsevierJournal of Optometry1888-42962013-01-0161182410.1016/j.optom.2012.06.008Validation of a modified ETDRS chart for European-wide use in populations that use the Cyrillic, Latin or Greek alphabetSotiris Plainis0Joanna Moschandreas1Trisevgeni Giannakopoulou2Vania Vitanova3Panagoula Nikolitsa4Jos J. Rozema5Marie-José Tassignon6Miltiadis K. Tsilimbaris7Ioannis G. Pallikaris8Institute of Vision and Optics (IVO), University of Crete, GreeceDepartment of Social Medicine, School of Health Sciences University of Crete, GreeceInstitute of Vision and Optics (IVO), University of Crete, GreeceDepartment of Ophthalmology, University Hospital of Crete, Heraklion, GreeceInstitute of Vision and Optics (IVO), University of Crete, GreeceDepartment of Ophthalmology, Antwerp University Hospital, Edegem, BelgiumDepartment of Medicine and Health Science, University of Antwerp, Wilrijk, BelgiumInstitute of Vision and Optics (IVO), University of Crete, GreeceInstitute of Vision and Optics (IVO), University of Crete, GreecePurpose: To validate a modified ETDRS visual acuity (VA) chart developed for European-wide use, in populations that use the Cyrillic, Latin or Greek alphabet. Methods: The charts were validated in three groups: 310 school children in Bulgaria (mean age 13 ± 1 years), 227 school children in Greece (mean age 14 ± 1 years) and 85 patients with no ocular pathology in Belgium (mean age 26 ± 5 years). VA was assessed with the habitual refractive correction, using the standard ETDRS charts and the modified European-wide charts. The intra-class correlation coefficient (ICC) was used to assess the test–retest reliability of the European-wide chart. The Bland–Altman comparison method was used to assess agreement between the two different versions of the new chart, as well as to compare these to the standard ETDRS-charts. Limits of agreement were calculated for differences in VA scores (test–retest variability (TRV)) between measurement sessions for the European-wide charts. Results: The TRV of the European-wide charts was found to be ±0.10 logMAR, corresponding to 5 ETDRS letters, for both chart 1 and chart 2. The ICC was estimated to be 0.968 for the RE and 0.961 for the LE. The European-wide charts generated on average slightly higher logMAR scores compared to the standard ETDRS charts in all three groups. Conclusions: The “European-wide” charts appear to be a valid alternative to the standard ETDRS acuity charts, offering the advantage of containing letters readable by all European citizens.http://www.sciencedirect.com/science/article/pii/S1888429612000817Visual acuityValidationTest–retest variabilityAcuity charts |
| spellingShingle | Sotiris Plainis Joanna Moschandreas Trisevgeni Giannakopoulou Vania Vitanova Panagoula Nikolitsa Jos J. Rozema Marie-José Tassignon Miltiadis K. Tsilimbaris Ioannis G. Pallikaris Validation of a modified ETDRS chart for European-wide use in populations that use the Cyrillic, Latin or Greek alphabet Journal of Optometry Visual acuity Validation Test–retest variability Acuity charts |
| title | Validation of a modified ETDRS chart for European-wide use in populations that use the Cyrillic, Latin or Greek alphabet |
| title_full | Validation of a modified ETDRS chart for European-wide use in populations that use the Cyrillic, Latin or Greek alphabet |
| title_fullStr | Validation of a modified ETDRS chart for European-wide use in populations that use the Cyrillic, Latin or Greek alphabet |
| title_full_unstemmed | Validation of a modified ETDRS chart for European-wide use in populations that use the Cyrillic, Latin or Greek alphabet |
| title_short | Validation of a modified ETDRS chart for European-wide use in populations that use the Cyrillic, Latin or Greek alphabet |
| title_sort | validation of a modified etdrs chart for european wide use in populations that use the cyrillic latin or greek alphabet |
| topic | Visual acuity Validation Test–retest variability Acuity charts |
| url | http://www.sciencedirect.com/science/article/pii/S1888429612000817 |
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