Clinically relevant differences in the selection of toric intraocular lens power in normal eyes: preoperative measurement vs intraoperative aberrometry
James A Davison,1 Sarah Makari,2 Richard Potvin21Wolfe Eye Clinic, Marshalltown, IA, USA; 2Science in Vision, Akron, NY, USAPurpose: To assess the value of intraoperative aberrometry (IA) in determining toric intraocular lens (IOL) power in eyes with no previous ocular surgery.Patients and methods:...
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| Format: | Article |
| Language: | English |
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Dove Medical Press
2019-05-01
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| Series: | Clinical Ophthalmology |
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| Online Access: | https://www.dovepress.com/clinically-relevant-differences-in-the-selection-of-toric-intraocular--peer-reviewed-article-OPTH |
| _version_ | 1818399259356037120 |
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| author | Davison JA Makari S Potvin R |
| author_facet | Davison JA Makari S Potvin R |
| author_sort | Davison JA |
| collection | DOAJ |
| description | James A Davison,1 Sarah Makari,2 Richard Potvin21Wolfe Eye Clinic, Marshalltown, IA, USA; 2Science in Vision, Akron, NY, USAPurpose: To assess the value of intraoperative aberrometry (IA) in determining toric intraocular lens (IOL) power in eyes with no previous ocular surgery.Patients and methods: This was a retrospective data review at one US clinical site of eyes that underwent uncomplicated cataract surgery with toric IOL implantation where standard preoperative and IA measurements were available. Calculated IOL sphere and cylinder powers and orientation were compared based on the measurement method and the postoperative refraction, using both actual and simulated (back-calculated) results. Comparisons were between the surgeon’s preoperative calculations, IA measurements, the actual IOL implanted and results from the Barrett toric calculator.Results: There was no significant difference (p>0.7) in the number of eyes expected to have, or having, a spherical equivalent refraction within 0.50D of the target between Actual (92%), IA (93%) or Preoperative calculation results (86%). The percentage of eyes with expected residual refractive astigmatism ≤0.50D was significantly higher for the IA vs Preoperative calculations (75% vs 53%, p<0.01). There was no significant difference in expected results between the Actual, IA and Barrett toric calculations (p>0.65).Conclusion: Modern IOL calculations for sphere produced results comparable to those achieved with IA. The value of IA in determining IOL cylinder power and orientation was more evident when comparing expected results between IA and a preoperative method based on measured total corneal astigmatism than when comparing to expected results from the Barrett toric calculator.Keywords: ORA, refraction, prediction error, IOL power calculation, astigmatism, toric IOL |
| first_indexed | 2024-12-14T07:17:50Z |
| format | Article |
| id | doaj.art-dfdbbe40daa84f519b3560169b2b0abc |
| institution | Directory Open Access Journal |
| issn | 1177-5483 |
| language | English |
| last_indexed | 2024-12-14T07:17:50Z |
| publishDate | 2019-05-01 |
| publisher | Dove Medical Press |
| record_format | Article |
| series | Clinical Ophthalmology |
| spelling | doaj.art-dfdbbe40daa84f519b3560169b2b0abc2022-12-21T23:11:41ZengDove Medical PressClinical Ophthalmology1177-54832019-05-01Volume 1391392046176Clinically relevant differences in the selection of toric intraocular lens power in normal eyes: preoperative measurement vs intraoperative aberrometryDavison JAMakari SPotvin RJames A Davison,1 Sarah Makari,2 Richard Potvin21Wolfe Eye Clinic, Marshalltown, IA, USA; 2Science in Vision, Akron, NY, USAPurpose: To assess the value of intraoperative aberrometry (IA) in determining toric intraocular lens (IOL) power in eyes with no previous ocular surgery.Patients and methods: This was a retrospective data review at one US clinical site of eyes that underwent uncomplicated cataract surgery with toric IOL implantation where standard preoperative and IA measurements were available. Calculated IOL sphere and cylinder powers and orientation were compared based on the measurement method and the postoperative refraction, using both actual and simulated (back-calculated) results. Comparisons were between the surgeon’s preoperative calculations, IA measurements, the actual IOL implanted and results from the Barrett toric calculator.Results: There was no significant difference (p>0.7) in the number of eyes expected to have, or having, a spherical equivalent refraction within 0.50D of the target between Actual (92%), IA (93%) or Preoperative calculation results (86%). The percentage of eyes with expected residual refractive astigmatism ≤0.50D was significantly higher for the IA vs Preoperative calculations (75% vs 53%, p<0.01). There was no significant difference in expected results between the Actual, IA and Barrett toric calculations (p>0.65).Conclusion: Modern IOL calculations for sphere produced results comparable to those achieved with IA. The value of IA in determining IOL cylinder power and orientation was more evident when comparing expected results between IA and a preoperative method based on measured total corneal astigmatism than when comparing to expected results from the Barrett toric calculator.Keywords: ORA, refraction, prediction error, IOL power calculation, astigmatism, toric IOLhttps://www.dovepress.com/clinically-relevant-differences-in-the-selection-of-toric-intraocular--peer-reviewed-article-OPTHORArefractionprediction errorIOL power calculationastigmatismtoric IOL |
| spellingShingle | Davison JA Makari S Potvin R Clinically relevant differences in the selection of toric intraocular lens power in normal eyes: preoperative measurement vs intraoperative aberrometry Clinical Ophthalmology ORA refraction prediction error IOL power calculation astigmatism toric IOL |
| title | Clinically relevant differences in the selection of toric intraocular lens power in normal eyes: preoperative measurement vs intraoperative aberrometry |
| title_full | Clinically relevant differences in the selection of toric intraocular lens power in normal eyes: preoperative measurement vs intraoperative aberrometry |
| title_fullStr | Clinically relevant differences in the selection of toric intraocular lens power in normal eyes: preoperative measurement vs intraoperative aberrometry |
| title_full_unstemmed | Clinically relevant differences in the selection of toric intraocular lens power in normal eyes: preoperative measurement vs intraoperative aberrometry |
| title_short | Clinically relevant differences in the selection of toric intraocular lens power in normal eyes: preoperative measurement vs intraoperative aberrometry |
| title_sort | clinically relevant differences in the selection of toric intraocular lens power in normal eyes preoperative measurement vs intraoperative aberrometry |
| topic | ORA refraction prediction error IOL power calculation astigmatism toric IOL |
| url | https://www.dovepress.com/clinically-relevant-differences-in-the-selection-of-toric-intraocular--peer-reviewed-article-OPTH |
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