J Korean Ophthalmol Soc.  2017 May;58(5):523-529. 10.3341/jkos.2017.58.5.523.

Comparison of Ocular Biometry and Refractive Outcomes Using IOL Master 700, IOL Master 500, and Ultrasound

• Yoo TK
• Choi MJ
• Lee HK
• Seo KY
• Kim EK
• Kim TI

• KMID: 2378622
• DOI: http://doi.org/10.3341/jkos.2017.58.5.523

Abstract

PURPOSE
To compare the new swept-source optical coherence tomography based IOL Master 700 to both the partial coherence interferometry based IOL Master 500 and ultrasound A-scan in terms of the ocular biometry and the prediction of postoperative refractive outcomes.
METHODS
A total 67 eyes of 55 patients who received cataract surgery were included in our study. The axial length, anterior chamber depth, and keratometry were measured using IOL Master 700, IOL Master 500, and A-scan. The predictive errors, which are the differences between predictive refraction and post-operative refraction 1 month after surgery, were also compared.
RESULTS
Axial length measurements were not successful in 5 eyes measured using IOL Master 700 and in 12 eyes measured using IOL Master 500. The mean absolute postoperative refraction predictive errors were 0.63 ± 0.50 diopters, 0.66 ± 0.51 diopters, and 0.62 ± 0.51 diopters for IOL Master 700, IOL Master 500, and A-scan, respectively, and these values exhibited no statistically significant differences. The mean axial lengths were 24.25 ± 2.41 mm, 24.24 ± 2.40 mm, and 24.22 ± 2.39 mm; the mean anterior chamber depths were 3.09 ± 0.39 mm, 3.17 ± 0.39 mm, and 3.15 ± 0.46 mm; and the mean keratometry values were 44.12 ± 1.82 diopters, 44.57 ± 2.10 diopters, and 43.98 ± 1.84 diopters for the IOL Master 700, IOL Master 500, and A-scan groups, respectively. None of these parameters showed statistically significant differences between the three groups. Regarding pair-wise comparison, there were significant differences between the IOL Master 700 and the other devices.
CONCLUSIONS
The ocular biometric measurements measured using IOL Master 700, IOL Master 500, and A-scan showed no significant differences. However, IOL Master 700 demonstrated a superior ability to successfully take biometric measurements compared to IOL Master 500. Therefore, IOL Master 700 is capable of measuring ocular biometry for cataract surgery in clinical practice.

Keyword

A-scan; Biometry; Cataract; Intraocular lens; IOL Master 700

MeSH Terms

Anterior Chamber
Biometry*
Cataract
Humans
Interferometry
Lenses, Intraocular
Tomography, Optical Coherence
Ultrasonography*

Figure

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  Figure 1 Ocular biometry measurement success rate obtained with IOL Master 700, IOL Master 500, and Ultrasound A-scan. Axial length measurements were not successful in 5 eyes measured using IOL Master 700 and in 12 eyes measured using IOL Master 500.

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  Figure 2 Histogram of mean absolute postoperative refractive error for A-scan, IOL Master 700, and IOL Master 500. The mean absolute postoperative refraction predictive errors exhibited no statistically significant differences between the three groups.

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  Figure 3 Bland-Altman plots comparing IOL Master 700 with IOL Master 500 and with A-scan. The middle lines indicate means and the dot lines above and below represent 95% limits of agreement. (A) Axial length with IOL Master 700 and IOL Master 500. (B) Axial length with IOL Master 700 and A-scan. (C) Anterior chamber depth with IOL Master 700 and IOL Master 500. (D) Anterior chamber depth with IOL Master 700 and A-scan. (E) Corneal power with IOL Master 700 and IOL Master 500. (F) Corneal power with IOL Master 700 and A-scan. SD = standard deviation. AXL = axial lengh; ACD = anterior chamber depth; K = corneal power from keratometry.

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