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Accuracy of a New Swept-Source Optical Coherence Tomography Biometer for IOL Power Calculation and Comparison to IOLMaster.
J Refract Surg 2017; 33(10):690-695JR

Abstract

PURPOSE

To investigate the accuracy of the measurements provided by a new optical biometer (OA-2000, Tomey Corporation, Nagoya, Japan) for calculating the intraocular lens (IOL) power and to compare the refractive outcomes to those obtained with the IOLMaster 500 (Carl Zeiss Meditec, Jena, Germany).

METHODS

In this interventional multicenter study, consecutive patients having cataract surgery were enrolled. Only the IOL model used in the largest sample of patients was selected and the eyes implanted with that IOL were subsequently analyzed. The OA-2000, an optical biometer based on swept-source optical coherence tomography (SS-OCT), was used to measure axial length and corneal power in all eyes. IOL power was calculated with the Hoffer Q, Holladay 1, and SRK/T formulas. In a subsample of eyes, the IOL power was also calculated with measurements obtained by partial coherence interferometry (IOLMaster 500). The median absolute error and percentage of eyes with a prediction error of ±0.50 diopters (D) or less were calculated.

RESULTS

Two hundred forty-nine eyes were analyzed. Using SS-OCT, the median absolute error ranged between 0.33 (Holladay 1) and 0.35 (SRK/T) D. The rate of eyes with a prediction error of ±0.50 D or less ranged between 71.5% (Hoffer Q) and 67.1% (SRK/T). In the subsample of 87 eyes with measurements by both devices, the median absolute error was lower with the OA-2000 (Hoffer Q: P = .0377; Holladay 1: P = .0191; SRK/T: P = .0087).

CONCLUSIONS

The SS-OCT-based optical biometer investigated in the current study provides accurate measurements for IOL power calculation and seems to offer more predictable refractive results compared to the partial coherence interferometry IOLMaster. [J Refract Surg. 2017;33(10):690-695.].

Authors

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Pub Type(s)

Clinical Study
Comparative Study
Journal Article
Multicenter Study

Language

eng

PubMed ID

28991337

Citation

Savini, Giacomo, et al. "Accuracy of a New Swept-Source Optical Coherence Tomography Biometer for IOL Power Calculation and Comparison to IOLMaster." Journal of Refractive Surgery (Thorofare, N.J. : 1995), vol. 33, no. 10, 2017, pp. 690-695.
Savini G, Hoffer KJ, Shammas HJ, et al. Accuracy of a New Swept-Source Optical Coherence Tomography Biometer for IOL Power Calculation and Comparison to IOLMaster. J Refract Surg. 2017;33(10):690-695.
Savini, G., Hoffer, K. J., Shammas, H. J., Aramberri, J., Huang, J., & Barboni, P. (2017). Accuracy of a New Swept-Source Optical Coherence Tomography Biometer for IOL Power Calculation and Comparison to IOLMaster. Journal of Refractive Surgery (Thorofare, N.J. : 1995), 33(10), pp. 690-695. doi:10.3928/1081597X-20170721-05.
Savini G, et al. Accuracy of a New Swept-Source Optical Coherence Tomography Biometer for IOL Power Calculation and Comparison to IOLMaster. J Refract Surg. 2017 Oct 1;33(10):690-695. PubMed PMID: 28991337.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Accuracy of a New Swept-Source Optical Coherence Tomography Biometer for IOL Power Calculation and Comparison to IOLMaster. AU - Savini,Giacomo, AU - Hoffer,Kenneth J, AU - Shammas,H John, AU - Aramberri,Jaime, AU - Huang,Jinhai, AU - Barboni,Piero, PY - 2017/04/23/received PY - 2017/07/20/accepted PY - 2017/10/10/entrez PY - 2017/10/11/pubmed PY - 2018/4/6/medline SP - 690 EP - 695 JF - Journal of refractive surgery (Thorofare, N.J. : 1995) JO - J Refract Surg VL - 33 IS - 10 N2 - PURPOSE: To investigate the accuracy of the measurements provided by a new optical biometer (OA-2000, Tomey Corporation, Nagoya, Japan) for calculating the intraocular lens (IOL) power and to compare the refractive outcomes to those obtained with the IOLMaster 500 (Carl Zeiss Meditec, Jena, Germany). METHODS: In this interventional multicenter study, consecutive patients having cataract surgery were enrolled. Only the IOL model used in the largest sample of patients was selected and the eyes implanted with that IOL were subsequently analyzed. The OA-2000, an optical biometer based on swept-source optical coherence tomography (SS-OCT), was used to measure axial length and corneal power in all eyes. IOL power was calculated with the Hoffer Q, Holladay 1, and SRK/T formulas. In a subsample of eyes, the IOL power was also calculated with measurements obtained by partial coherence interferometry (IOLMaster 500). The median absolute error and percentage of eyes with a prediction error of ±0.50 diopters (D) or less were calculated. RESULTS: Two hundred forty-nine eyes were analyzed. Using SS-OCT, the median absolute error ranged between 0.33 (Holladay 1) and 0.35 (SRK/T) D. The rate of eyes with a prediction error of ±0.50 D or less ranged between 71.5% (Hoffer Q) and 67.1% (SRK/T). In the subsample of 87 eyes with measurements by both devices, the median absolute error was lower with the OA-2000 (Hoffer Q: P = .0377; Holladay 1: P = .0191; SRK/T: P = .0087). CONCLUSIONS: The SS-OCT-based optical biometer investigated in the current study provides accurate measurements for IOL power calculation and seems to offer more predictable refractive results compared to the partial coherence interferometry IOLMaster. [J Refract Surg. 2017;33(10):690-695.]. SN - 1081-597X UR - https://www.unboundmedicine.com/medline/citation/28991337/Accuracy_of_a_New_Swept_Source_Optical_Coherence_Tomography_Biometer_for_IOL_Power_Calculation_and_Comparison_to_IOLMaster_ L2 - https://www.healio.com/doiresolver?doi=10.3928/1081597X-20170721-05 DB - PRIME DP - Unbound Medicine ER -