Comparison of Phakic Intraocular Lens Vault Using Conventional Nomogram and Prediction Formulas
This study aimed to compare the achieved vault using a manufacturer’s nomogram and the predicted vault using the currently available prediction formulas after posterior chamber phakic intraocular lens (EVO Implantable Collamer Lens; ICL, STAAR Surgical) implantation. We included 200 eyes of 100 cons...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-12-01
|
| Series: | Journal of Clinical Medicine |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-0383/9/12/4090 |
| _version_ | 1797544252829335552 |
|---|---|
| author | Wakako Ando Kazutaka Kamiya Hideki Hayakawa Masahide Takahashi Nobuyuki Shoji |
| author_facet | Wakako Ando Kazutaka Kamiya Hideki Hayakawa Masahide Takahashi Nobuyuki Shoji |
| author_sort | Wakako Ando |
| collection | DOAJ |
| description | This study aimed to compare the achieved vault using a manufacturer’s nomogram and the predicted vault using the currently available prediction formulas after posterior chamber phakic intraocular lens (EVO Implantable Collamer Lens; ICL, STAAR Surgical) implantation. We included 200 eyes of 100 consecutive patients (mean age ± standard deviation, 34.3 ± 7.8 years) undergoing ICL implantation with a central hole. Three months postoperatively, we quantitatively measured the actual vault, and we compared it with the predicted vault using anterior segment optical coherence tomography (CASIA 2, Tomey). The agreement rate of the recommended ICL size using the manufacturer’s nomogram, the NK formula, and the KS formula was 50.0%. The achieved vault was 477.1 ± 263.7 µm, which was significantly smaller than the predicted vaults of 551.2 ± 335.1 and 606.4 ± 212.2 µm, using the NK and KS formulas, respectively (Dunnett test, <i>p</i> = 0.014, <i>p</i> < 0.001). The achieved vault was not significantly different from the predicted vault using the NK or KS formula (<i>p</i> = 0.386, <i>p</i> = 0.157) when selecting a 12.1 mm ICL size. It was not significantly different from the predicted vault using the NK formula (<i>p</i> = 0.962), but it was significantly smaller than that using the KS formula (<i>p</i> = 0.033) when selecting a 12.6 mm size. It was significantly smaller than the predicted vault using the NK and KS formulas (<i>p</i> < 0.001) when selecting 13.2 mm size. The total agreement rate of the recommended ICL size was approximately 50%. The predicted ICL vault tended to overestimate the actual ICL vault, especially when selecting a larger ICL size. |
| first_indexed | 2024-03-10T13:57:52Z |
| format | Article |
| id | doaj.art-2a851faf40f7402fa67fd3d8fa6a61f3 |
| institution | Directory Open Access Journal |
| issn | 2077-0383 |
| language | English |
| last_indexed | 2024-03-10T13:57:52Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Clinical Medicine |
| spelling | doaj.art-2a851faf40f7402fa67fd3d8fa6a61f32023-11-21T01:26:06ZengMDPI AGJournal of Clinical Medicine2077-03832020-12-01912409010.3390/jcm9124090Comparison of Phakic Intraocular Lens Vault Using Conventional Nomogram and Prediction FormulasWakako Ando0Kazutaka Kamiya1Hideki Hayakawa2Masahide Takahashi3Nobuyuki Shoji4Department of Ophthalmology, School of Medicine, Kitasato University, Kanagawa 252-0374, JapanVisual Physiology, School of Allied Health Sciences, Kitasato University, Kanagawa 252-0373, JapanDepartment of Ophthalmology, School of Medicine, Kitasato University, Kanagawa 252-0374, JapanDepartment of Ophthalmology, School of Medicine, Kitasato University, Kanagawa 252-0374, JapanDepartment of Ophthalmology, School of Medicine, Kitasato University, Kanagawa 252-0374, JapanThis study aimed to compare the achieved vault using a manufacturer’s nomogram and the predicted vault using the currently available prediction formulas after posterior chamber phakic intraocular lens (EVO Implantable Collamer Lens; ICL, STAAR Surgical) implantation. We included 200 eyes of 100 consecutive patients (mean age ± standard deviation, 34.3 ± 7.8 years) undergoing ICL implantation with a central hole. Three months postoperatively, we quantitatively measured the actual vault, and we compared it with the predicted vault using anterior segment optical coherence tomography (CASIA 2, Tomey). The agreement rate of the recommended ICL size using the manufacturer’s nomogram, the NK formula, and the KS formula was 50.0%. The achieved vault was 477.1 ± 263.7 µm, which was significantly smaller than the predicted vaults of 551.2 ± 335.1 and 606.4 ± 212.2 µm, using the NK and KS formulas, respectively (Dunnett test, <i>p</i> = 0.014, <i>p</i> < 0.001). The achieved vault was not significantly different from the predicted vault using the NK or KS formula (<i>p</i> = 0.386, <i>p</i> = 0.157) when selecting a 12.1 mm ICL size. It was not significantly different from the predicted vault using the NK formula (<i>p</i> = 0.962), but it was significantly smaller than that using the KS formula (<i>p</i> = 0.033) when selecting a 12.6 mm size. It was significantly smaller than the predicted vault using the NK and KS formulas (<i>p</i> < 0.001) when selecting 13.2 mm size. The total agreement rate of the recommended ICL size was approximately 50%. The predicted ICL vault tended to overestimate the actual ICL vault, especially when selecting a larger ICL size.https://www.mdpi.com/2077-0383/9/12/4090vaultICLphakic IOLsizingpredictabilitynomogram |
| spellingShingle | Wakako Ando Kazutaka Kamiya Hideki Hayakawa Masahide Takahashi Nobuyuki Shoji Comparison of Phakic Intraocular Lens Vault Using Conventional Nomogram and Prediction Formulas Journal of Clinical Medicine vault ICL phakic IOL sizing predictability nomogram |
| title | Comparison of Phakic Intraocular Lens Vault Using Conventional Nomogram and Prediction Formulas |
| title_full | Comparison of Phakic Intraocular Lens Vault Using Conventional Nomogram and Prediction Formulas |
| title_fullStr | Comparison of Phakic Intraocular Lens Vault Using Conventional Nomogram and Prediction Formulas |
| title_full_unstemmed | Comparison of Phakic Intraocular Lens Vault Using Conventional Nomogram and Prediction Formulas |
| title_short | Comparison of Phakic Intraocular Lens Vault Using Conventional Nomogram and Prediction Formulas |
| title_sort | comparison of phakic intraocular lens vault using conventional nomogram and prediction formulas |
| topic | vault ICL phakic IOL sizing predictability nomogram |
| url | https://www.mdpi.com/2077-0383/9/12/4090 |
| work_keys_str_mv | AT wakakoando comparisonofphakicintraocularlensvaultusingconventionalnomogramandpredictionformulas AT kazutakakamiya comparisonofphakicintraocularlensvaultusingconventionalnomogramandpredictionformulas AT hidekihayakawa comparisonofphakicintraocularlensvaultusingconventionalnomogramandpredictionformulas AT masahidetakahashi comparisonofphakicintraocularlensvaultusingconventionalnomogramandpredictionformulas AT nobuyukishoji comparisonofphakicintraocularlensvaultusingconventionalnomogramandpredictionformulas |