Predictability of combined cataract surgery and trabeculectomy using Barrett Universal Ⅱ formula.
<h4>Purpose</h4>To compare the predictability of intraocular lens (IOL) power calculation using the Barrett Universal II and the SRK/T formulas in eyes undergoing combined cataract surgery and trabeculectomy.<h4>Methods</h4>We retrospectively reviewed the clinical charts of 5...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2022-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0270363 |
| _version_ | 1818048382996840448 |
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| author | Kei Iijima Kazutaka Kamiya Yoshihiko Iida Masayuki Kasahara Nobuyuki Shoji |
| author_facet | Kei Iijima Kazutaka Kamiya Yoshihiko Iida Masayuki Kasahara Nobuyuki Shoji |
| author_sort | Kei Iijima |
| collection | DOAJ |
| description | <h4>Purpose</h4>To compare the predictability of intraocular lens (IOL) power calculation using the Barrett Universal II and the SRK/T formulas in eyes undergoing combined cataract surgery and trabeculectomy.<h4>Methods</h4>We retrospectively reviewed the clinical charts of 56 consecutive eyes undergoing cataract surgery and trabeculectomy. IOL power calculations were performed using the Barrett Universal II and SRK/T formulas. We compared the prediction error, the absolute error, and the percentages within ± 0.5 D and ±1.0 D of the targeted refraction, 3 months postoperatively, and also investigated the relationship of the prediction error with the keratometric readings and axial length, using the two formulas.<h4>Results</h4>The prediction error using the SRK/T formula was significantly more myopic than that using the Barrett Universal II formula (paired t-test, p<0.001). The absolute error using the Barrett Universal II formula was significantly smaller than that using the SRK/T formula (p = 0.039). We found significant correlations of the prediction error with the axial length (Pearson correlation coefficient, r = 0.273, p = 0.042), and the keratometric readings (r = -0.317, p = 0.017), using SRK/T formula, but no significant correlations between them (r = 0.219, p = 0.167, and r = -0.023, p = 0.870), using the Barrett Universal II formula.<h4>Conclusions</h4>The Barrett Universal II formula provides a better predictability of IOL power calculation and is less susceptible to the effect of the axial length and the corneal shape, than the SRK/T formula. The Barrett Universal formula, rather than the SRK/T formula, may be clinically helpful for improving the refractive accuracy in such eyes. |
| first_indexed | 2024-12-10T10:20:48Z |
| format | Article |
| id | doaj.art-05892005394247f5a69e41b404558689 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-10T10:20:48Z |
| publishDate | 2022-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-05892005394247f5a69e41b4045586892022-12-22T01:52:52ZengPublic Library of Science (PLoS)PLoS ONE1932-62032022-01-01176e027036310.1371/journal.pone.0270363Predictability of combined cataract surgery and trabeculectomy using Barrett Universal Ⅱ formula.Kei IijimaKazutaka KamiyaYoshihiko IidaMasayuki KasaharaNobuyuki Shoji<h4>Purpose</h4>To compare the predictability of intraocular lens (IOL) power calculation using the Barrett Universal II and the SRK/T formulas in eyes undergoing combined cataract surgery and trabeculectomy.<h4>Methods</h4>We retrospectively reviewed the clinical charts of 56 consecutive eyes undergoing cataract surgery and trabeculectomy. IOL power calculations were performed using the Barrett Universal II and SRK/T formulas. We compared the prediction error, the absolute error, and the percentages within ± 0.5 D and ±1.0 D of the targeted refraction, 3 months postoperatively, and also investigated the relationship of the prediction error with the keratometric readings and axial length, using the two formulas.<h4>Results</h4>The prediction error using the SRK/T formula was significantly more myopic than that using the Barrett Universal II formula (paired t-test, p<0.001). The absolute error using the Barrett Universal II formula was significantly smaller than that using the SRK/T formula (p = 0.039). We found significant correlations of the prediction error with the axial length (Pearson correlation coefficient, r = 0.273, p = 0.042), and the keratometric readings (r = -0.317, p = 0.017), using SRK/T formula, but no significant correlations between them (r = 0.219, p = 0.167, and r = -0.023, p = 0.870), using the Barrett Universal II formula.<h4>Conclusions</h4>The Barrett Universal II formula provides a better predictability of IOL power calculation and is less susceptible to the effect of the axial length and the corneal shape, than the SRK/T formula. The Barrett Universal formula, rather than the SRK/T formula, may be clinically helpful for improving the refractive accuracy in such eyes.https://doi.org/10.1371/journal.pone.0270363 |
| spellingShingle | Kei Iijima Kazutaka Kamiya Yoshihiko Iida Masayuki Kasahara Nobuyuki Shoji Predictability of combined cataract surgery and trabeculectomy using Barrett Universal Ⅱ formula. PLoS ONE |
| title | Predictability of combined cataract surgery and trabeculectomy using Barrett Universal Ⅱ formula. |
| title_full | Predictability of combined cataract surgery and trabeculectomy using Barrett Universal Ⅱ formula. |
| title_fullStr | Predictability of combined cataract surgery and trabeculectomy using Barrett Universal Ⅱ formula. |
| title_full_unstemmed | Predictability of combined cataract surgery and trabeculectomy using Barrett Universal Ⅱ formula. |
| title_short | Predictability of combined cataract surgery and trabeculectomy using Barrett Universal Ⅱ formula. |
| title_sort | predictability of combined cataract surgery and trabeculectomy using barrett universal ii formula |
| url | https://doi.org/10.1371/journal.pone.0270363 |
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