Comparison of keratometry assessment between IOLMaster and Pentacam in dry eyes
Background: To compare the keratometry measurements between IOLMaster and Pentacam in dry eyes. Methods: A total of 122 eyes of 95 age-related cataract patients with dry eye disease were enrolled in this study. Keratometry measurements including flat and steep keratometry (K), mean keratometry, axis...
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Elsevier
2025-04-01
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| Series: | Photodiagnosis and Photodynamic Therapy |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1572100025000572 |
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| author | Fei Yang Jiayin Qin Xijuan Wang Mingwu Li |
| author_facet | Fei Yang Jiayin Qin Xijuan Wang Mingwu Li |
| author_sort | Fei Yang |
| collection | DOAJ |
| description | Background: To compare the keratometry measurements between IOLMaster and Pentacam in dry eyes. Methods: A total of 122 eyes of 95 age-related cataract patients with dry eye disease were enrolled in this study. Keratometry measurements including flat and steep keratometry (K), mean keratometry, axis of the flat K, astigmatism of anterior corneal surface (A-ACS) were obtained using IOLMaster and Pentacam. A second series of examinations were performed 1 min after instillation of artificial tears. Values of keratometry measured by two devices were compared both before and after using artificial tears. Changes of the above parameters in each device were also analyzed. Results: The mean flat K of IOLMaster was significantly lower than Pentacam. A-ACS was significantly larger in IOLMaster than in Pentacam, with a mean discrepancy of 0.46 D and an upper limit of 95 % LoA of 1.48 D. The 95 % LoA for flat K axis also exceeded the clinically relevant margin. Keratometry and A-ACS measurements were significantly modified after instillation of artificial tears. None of the above parameters showed significant difference between two devices except for A-ACS, with the mean difference decreased to 0.17 D with 95 % LoA of -0.20 to 0.54 D. Intra device comparison showed that changes of A-ACS and flat K axis measured with IOLMaster were greater than those measured with Pentacam. Conclusion: Dry eye has significantly greater impact on keratometry measured with IOLMaster than with Pentacam. For cases with A-ACS between the two devices over 0.5 D, artificial tears are recommended before performing biometry. |
| format | Article |
| id | doaj-art-2f664758859e40a182af6d01186f8e97 |
| institution | DOAJ |
| issn | 1572-1000 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
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| series | Photodiagnosis and Photodynamic Therapy |
| spelling | doaj-art-2f664758859e40a182af6d01186f8e972025-08-20T03:16:26ZengElsevierPhotodiagnosis and Photodynamic Therapy1572-10002025-04-015210452710.1016/j.pdpdt.2025.104527Comparison of keratometry assessment between IOLMaster and Pentacam in dry eyesFei Yang0Jiayin Qin1Xijuan Wang2Mingwu Li3Department of Ophthalmology, Peking University International Hospital, Beijing, ChinaDepartment of Ophthalmology, Peking University International Hospital, Beijing, ChinaDepartment of Ophthalmology, Peking University International Hospital, Beijing, ChinaDepartment of Ophthalmology, Peking University International Hospital, Beijing, China; Department of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing, China; Corresponding author.Background: To compare the keratometry measurements between IOLMaster and Pentacam in dry eyes. Methods: A total of 122 eyes of 95 age-related cataract patients with dry eye disease were enrolled in this study. Keratometry measurements including flat and steep keratometry (K), mean keratometry, axis of the flat K, astigmatism of anterior corneal surface (A-ACS) were obtained using IOLMaster and Pentacam. A second series of examinations were performed 1 min after instillation of artificial tears. Values of keratometry measured by two devices were compared both before and after using artificial tears. Changes of the above parameters in each device were also analyzed. Results: The mean flat K of IOLMaster was significantly lower than Pentacam. A-ACS was significantly larger in IOLMaster than in Pentacam, with a mean discrepancy of 0.46 D and an upper limit of 95 % LoA of 1.48 D. The 95 % LoA for flat K axis also exceeded the clinically relevant margin. Keratometry and A-ACS measurements were significantly modified after instillation of artificial tears. None of the above parameters showed significant difference between two devices except for A-ACS, with the mean difference decreased to 0.17 D with 95 % LoA of -0.20 to 0.54 D. Intra device comparison showed that changes of A-ACS and flat K axis measured with IOLMaster were greater than those measured with Pentacam. Conclusion: Dry eye has significantly greater impact on keratometry measured with IOLMaster than with Pentacam. For cases with A-ACS between the two devices over 0.5 D, artificial tears are recommended before performing biometry.http://www.sciencedirect.com/science/article/pii/S1572100025000572Dry eyeCataractKeratometryAstigmatismArtificial tearsIOLMasrer |
| spellingShingle | Fei Yang Jiayin Qin Xijuan Wang Mingwu Li Comparison of keratometry assessment between IOLMaster and Pentacam in dry eyes Photodiagnosis and Photodynamic Therapy Dry eye Cataract Keratometry Astigmatism Artificial tears IOLMasrer |
| title | Comparison of keratometry assessment between IOLMaster and Pentacam in dry eyes |
| title_full | Comparison of keratometry assessment between IOLMaster and Pentacam in dry eyes |
| title_fullStr | Comparison of keratometry assessment between IOLMaster and Pentacam in dry eyes |
| title_full_unstemmed | Comparison of keratometry assessment between IOLMaster and Pentacam in dry eyes |
| title_short | Comparison of keratometry assessment between IOLMaster and Pentacam in dry eyes |
| title_sort | comparison of keratometry assessment between iolmaster and pentacam in dry eyes |
| topic | Dry eye Cataract Keratometry Astigmatism Artificial tears IOLMasrer |
| url | http://www.sciencedirect.com/science/article/pii/S1572100025000572 |
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