Abstract
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.
| Original language | English |
|---|---|
| Article number | e0172634 |
| Journal | PLoS One |
| Volume | 12 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 1 2017 |
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ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Agricultural and Biological Sciences(all)
Cite this
Accuracy of optical biometry combined with Placido disc corneal topography for intraocular lens power calculation. / Savini, Giacomo; Hoffer, Kenneth J.; Barboni, Piero; Balducci, Nicole; Schiano-Lomoriello, Domenico; Ducoli, Pietro.
In: PLoS One, Vol. 12, No. 2, e0172634, 01.02.2017.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Accuracy of optical biometry combined with Placido disc corneal topography for intraocular lens power calculation.
AU - Savini, Giacomo
AU - Hoffer, Kenneth J.
AU - Barboni, Piero
AU - Balducci, Nicole
AU - Schiano-Lomoriello, Domenico
AU - Ducoli, Pietro
PY - 2017/2/1
Y1 - 2017/2/1
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=85013666100&partnerID=8YFLogxK
U2 - 10.1371/journal.pone.0172634
DO - 10.1371/journal.pone.0172634
M3 - Article
C2 - 28231267
AN - SCOPUS:85013666100
VL - 12
JO - PLoS One
JF - PLoS One
SN - 1932-6203
IS - 2
M1 - e0172634
ER -