Accuracy of optical biometry combined with Placido disc corneal topography for intraocular lens power calculation.
PURPOSE:To investigate the accuracy of a new optical biometer for intraocular lens (IOL) power calculation in eyes undergoing cataract surgery. METHODS:Consecutive eyes of patients undergoing cataract surgery with the same IOL model were enrolled in a prospective cohort study. Axial length (AL) and...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2017-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC5322924?pdf=render |
| _version_ | 1818921505022541824 |
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| author | Giacomo Savini Kenneth J Hoffer Piero Barboni Nicole Balducci Domenico Schiano-Lomoriello Pietro Ducoli |
| author_facet | Giacomo Savini Kenneth J Hoffer Piero Barboni Nicole Balducci Domenico Schiano-Lomoriello Pietro Ducoli |
| author_sort | Giacomo Savini |
| collection | DOAJ |
| description | PURPOSE:To investigate the accuracy of a new optical biometer for intraocular lens (IOL) power calculation in eyes undergoing cataract surgery. METHODS:Consecutive eyes of patients undergoing cataract surgery with the same IOL model were enrolled in a prospective cohort study. Axial length (AL) and corneal power were measured with an optical biometer based on optical low-coherence interferometry and Placido-disc corneal topography. IOL power was calculated with the Hoffer Q, Holladay 1 and SRK/T formulas. For each formula the lens constant was optimized in retrospect in order to achieve a mean prediction error (PE) of zero (difference between the predicted and the postoperative refraction). Median absolute error (MedAE) and percentage of eyes with PE ±0.50 D were calculated. RESULTS:Seventy-four eyes of 74 cataract patients were enrolled. The MedAE was 0.25 D with all formulas. A PE within ±0.50 D was obtained in 89.04% of cases with the Hoffer Q and SRK/T formulas, and in 87.67% of cases with the Holladay 1 formula. CONCLUSIONS:The optical biometer investigated in the present study provides accurate measurements for IOL power calculation. |
| first_indexed | 2024-12-20T01:38:42Z |
| format | Article |
| id | doaj.art-d60c8a9fd4ab483fa42a73db6f84c409 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-20T01:38:42Z |
| publishDate | 2017-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-d60c8a9fd4ab483fa42a73db6f84c4092022-12-21T19:57:57ZengPublic Library of Science (PLoS)PLoS ONE1932-62032017-01-01122e017263410.1371/journal.pone.0172634Accuracy of optical biometry combined with Placido disc corneal topography for intraocular lens power calculation.Giacomo SaviniKenneth J HofferPiero BarboniNicole BalducciDomenico Schiano-LomorielloPietro DucoliPURPOSE:To investigate the accuracy of a new optical biometer for intraocular lens (IOL) power calculation in eyes undergoing cataract surgery. METHODS:Consecutive eyes of patients undergoing cataract surgery with the same IOL model were enrolled in a prospective cohort study. Axial length (AL) and corneal power were measured with an optical biometer based on optical low-coherence interferometry and Placido-disc corneal topography. IOL power was calculated with the Hoffer Q, Holladay 1 and SRK/T formulas. For each formula the lens constant was optimized in retrospect in order to achieve a mean prediction error (PE) of zero (difference between the predicted and the postoperative refraction). Median absolute error (MedAE) and percentage of eyes with PE ±0.50 D were calculated. RESULTS:Seventy-four eyes of 74 cataract patients were enrolled. The MedAE was 0.25 D with all formulas. A PE within ±0.50 D was obtained in 89.04% of cases with the Hoffer Q and SRK/T formulas, and in 87.67% of cases with the Holladay 1 formula. CONCLUSIONS:The optical biometer investigated in the present study provides accurate measurements for IOL power calculation.http://europepmc.org/articles/PMC5322924?pdf=render |
| spellingShingle | Giacomo Savini Kenneth J Hoffer Piero Barboni Nicole Balducci Domenico Schiano-Lomoriello Pietro Ducoli Accuracy of optical biometry combined with Placido disc corneal topography for intraocular lens power calculation. PLoS ONE |
| title | Accuracy of optical biometry combined with Placido disc corneal topography for intraocular lens power calculation. |
| title_full | Accuracy of optical biometry combined with Placido disc corneal topography for intraocular lens power calculation. |
| title_fullStr | Accuracy of optical biometry combined with Placido disc corneal topography for intraocular lens power calculation. |
| title_full_unstemmed | Accuracy of optical biometry combined with Placido disc corneal topography for intraocular lens power calculation. |
| title_short | Accuracy of optical biometry combined with Placido disc corneal topography for intraocular lens power calculation. |
| title_sort | accuracy of optical biometry combined with placido disc corneal topography for intraocular lens power calculation |
| url | http://europepmc.org/articles/PMC5322924?pdf=render |
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