Agreement between IOLMaster® 500 and Pentacam® HR for keratometry assessment in type 2 diabetic and non-diabetic patients
AIM: To evaluate inter-device agreement of anterior keratometry obtained by the IOLMaster® 500 and Pentacam® HR in type 2 diabetic and non-diabetic patients. METHODS: Corneal measurements were sequentially performed in 60 diabetes mellitus (DM) and 48 age and sex-matched controls undergoing catarac...
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| Format: | Article |
| Language: | English |
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Press of International Journal of Ophthalmology (IJO PRESS)
2020-06-01
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| Series: | International Journal of Ophthalmology |
| Subjects: | |
| Online Access: | http://ies.ijo.cn/en_publish/2020/6/20200610.pdf |
| _version_ | 1818501310424547328 |
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| author | João N Beato João Esteves-Leandro David Reis Rita Matos Manuel Falcão Vítor Rosas Ângela Carneiro Fernando Falcão-Reis |
| author_facet | João N Beato João Esteves-Leandro David Reis Rita Matos Manuel Falcão Vítor Rosas Ângela Carneiro Fernando Falcão-Reis |
| author_sort | João N Beato |
| collection | DOAJ |
| description | AIM: To evaluate inter-device agreement of anterior keratometry obtained by the IOLMaster® 500 and Pentacam® HR in type 2 diabetic and non-diabetic patients.
METHODS: Corneal measurements were sequentially performed in 60 diabetes mellitus (DM) and 48 age and sex-matched controls undergoing cataract surgery. Variables recorded included flat and steep keratometry, mean keratometry (Km), astigmatism magnitude, axis location, J0 and J45 components. Bland-Altman plots and intraclass correlation coefficients were used for examination of agreement. Subgroup analyses were performed for astigmatism magnitude, diabetes duration, hemoglobin A1c (HbA1c) levels and diabetic retinopathy (DR) stage.
RESULTS: Agreement for Km and astigmatism magnitude were considered good and moderate, with 95% limits of agreement (LoA) of -1.09 to 1.23 diopters (D) and -0.83 to 0.86 D in DM group, respectively; and -0.59 to 0.72 D and -0.98 to 0.75 D in non-DM group, respectively. In contrast, the 95% LoA for corneal axis exceeded the clinically relevant margins in both groups. In the total sample, only 41 eyes (38%) had a smaller than 5-degree difference. Diabetes duration, HbA1c levels and DR stage were not found to significantly affect agreement. Logistic regression showed that higher corneal power (P=0.021) and astigmatism magnitude (P=0.011) were associated with a decreased risk of having a difference in axis location greater than 10-degrees.
CONCLUSION: In both groups, IOLMaster and Pentacam agree well for corneal power and moderately for astigmatism. However, axis location disagreement is frequent in eyes with flatter corneas and small amounts of astigmatism. |
| first_indexed | 2024-12-10T20:54:24Z |
| format | Article |
| id | doaj.art-e4f183f61708461cb031adac8376d06a |
| institution | Directory Open Access Journal |
| issn | 2222-3959 2227-4898 |
| language | English |
| last_indexed | 2024-12-10T20:54:24Z |
| publishDate | 2020-06-01 |
| publisher | Press of International Journal of Ophthalmology (IJO PRESS) |
| record_format | Article |
| series | International Journal of Ophthalmology |
| spelling | doaj.art-e4f183f61708461cb031adac8376d06a2022-12-22T01:34:00ZengPress of International Journal of Ophthalmology (IJO PRESS)International Journal of Ophthalmology2222-39592227-48982020-06-0113692092610.18240/ijo.2020.06.10Agreement between IOLMaster® 500 and Pentacam® HR for keratometry assessment in type 2 diabetic and non-diabetic patientsJoão N Beato0João Esteves-Leandro1David Reis2Rita Matos3Manuel Falcão4Vítor Rosas5Ângela Carneiro6Fernando Falcão-Reis7Department of Ophthalmology, São João Hospital, Porto 4200-319, Portugal; Department of Surgery and Physiology, Faculty of Medicine, University of Porto, Porto 4200-319, PortugalDepartment of Ophthalmology, São João Hospital, Porto 4200-319, PortugalFaculty of Medicine, University of Porto, Porto 4200-319, PortugalDepartment of Ophthalmology, São João Hospital, Porto 4200-319, PortugalDepartment of Ophthalmology, São João Hospital, Porto 4200-319, Portugal; Department of Surgery and Physiology, Faculty of Medicine, University of Porto, Porto 4200-319, PortugalDepartment of Ophthalmology, São João Hospital, Porto 4200-319, PortugalDepartment of Ophthalmology, São João Hospital, Porto 4200-319, Portugal; Department of Surgery and Physiology, Faculty of Medicine, University of Porto, Porto 4200-319, PortugalDepartment of Ophthalmology, São João Hospital, Porto 4200-319, Portugal; Department of Surgery and Physiology, Faculty of Medicine, University of Porto, Porto 4200-319, PortugalAIM: To evaluate inter-device agreement of anterior keratometry obtained by the IOLMaster® 500 and Pentacam® HR in type 2 diabetic and non-diabetic patients. METHODS: Corneal measurements were sequentially performed in 60 diabetes mellitus (DM) and 48 age and sex-matched controls undergoing cataract surgery. Variables recorded included flat and steep keratometry, mean keratometry (Km), astigmatism magnitude, axis location, J0 and J45 components. Bland-Altman plots and intraclass correlation coefficients were used for examination of agreement. Subgroup analyses were performed for astigmatism magnitude, diabetes duration, hemoglobin A1c (HbA1c) levels and diabetic retinopathy (DR) stage. RESULTS: Agreement for Km and astigmatism magnitude were considered good and moderate, with 95% limits of agreement (LoA) of -1.09 to 1.23 diopters (D) and -0.83 to 0.86 D in DM group, respectively; and -0.59 to 0.72 D and -0.98 to 0.75 D in non-DM group, respectively. In contrast, the 95% LoA for corneal axis exceeded the clinically relevant margins in both groups. In the total sample, only 41 eyes (38%) had a smaller than 5-degree difference. Diabetes duration, HbA1c levels and DR stage were not found to significantly affect agreement. Logistic regression showed that higher corneal power (P=0.021) and astigmatism magnitude (P=0.011) were associated with a decreased risk of having a difference in axis location greater than 10-degrees. CONCLUSION: In both groups, IOLMaster and Pentacam agree well for corneal power and moderately for astigmatism. However, axis location disagreement is frequent in eyes with flatter corneas and small amounts of astigmatism.http://ies.ijo.cn/en_publish/2020/6/20200610.pdfkeratometrydiabetes mellitusastigmatismcataractdiabetic retinopathy |
| spellingShingle | João N Beato João Esteves-Leandro David Reis Rita Matos Manuel Falcão Vítor Rosas Ângela Carneiro Fernando Falcão-Reis Agreement between IOLMaster® 500 and Pentacam® HR for keratometry assessment in type 2 diabetic and non-diabetic patients International Journal of Ophthalmology keratometry diabetes mellitus astigmatism cataract diabetic retinopathy |
| title | Agreement between IOLMaster® 500 and Pentacam® HR for keratometry assessment in type 2 diabetic and non-diabetic patients |
| title_full | Agreement between IOLMaster® 500 and Pentacam® HR for keratometry assessment in type 2 diabetic and non-diabetic patients |
| title_fullStr | Agreement between IOLMaster® 500 and Pentacam® HR for keratometry assessment in type 2 diabetic and non-diabetic patients |
| title_full_unstemmed | Agreement between IOLMaster® 500 and Pentacam® HR for keratometry assessment in type 2 diabetic and non-diabetic patients |
| title_short | Agreement between IOLMaster® 500 and Pentacam® HR for keratometry assessment in type 2 diabetic and non-diabetic patients |
| title_sort | agreement between iolmaster r 500 and pentacam r hr for keratometry assessment in type 2 diabetic and non diabetic patients |
| topic | keratometry diabetes mellitus astigmatism cataract diabetic retinopathy |
| url | http://ies.ijo.cn/en_publish/2020/6/20200610.pdf |
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