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Axial length measurement acquisition rates of two optical biometers in cataractous eyes.

Epitropoulos A - Clin Ophthalmol (2014)

Bottom Line: Standard-5 LS AL measurements were significantly shorter (P<0.001).IOLMaster(®) 500 average K measurements were significantly steeper (P<0.001).AL, ACD, and average Ks were statistically different between the two biometers, although the differences were clinically insignificant.

View Article: PubMed Central - PubMed

Affiliation: The Ohio State University Wexner Medical Center, Columbus, OH, USA.

ABSTRACT

Purpose: To compare the ability of two optical biometers to acquire the axial length (AL) measurement in cataractous eyes.

Methods: This prospective, comparative, single-center study comprised 105 eyes (63 patients). AL was acquired by the composite mean value of 20 measurements (composite-20 IM) and five measurements (composite-5 IM) (IOLMaster(®) 500 version 7.1 software), and the standard mean value of the first five measurements (standard-5 LS, Lenstar LS 900(®)). Anterior chamber depth (ACD) and average keratometry (K) readings were acquired.

Results: AL was acquired in 83.8%, 92.4%, and 84.8% of eyes for the composite-5 IM, composite-20 IM, and standard-5 LS, respectively. Standard-5 LS AL measurements were significantly shorter (P<0.001). IOLMaster(®) 500-acquired ACD (corneal epithelium to lens) measurements were significantly shorter (P<0.001). IOLMaster(®) 500 average K measurements were significantly steeper (P<0.001).

Conclusion: The composite-20 IM had the highest AL acquisition success rate of the three versions evaluated. AL, ACD, and average Ks were statistically different between the two biometers, although the differences were clinically insignificant.

No MeSH data available.


Axial length difference between IOLMaster® (composite-20 IM) and Lenstar®.Notes: Points outside limits labelled by subject id. Lenstar® standard-5, Haag-Streit AG (Koeniz, Switzerland); IOLMaster® composite-5; IOLMaster® composite-20, Carl Zeiss Meditec AG (Jena, Germany). The dotted line signifies the mean difference in axial length (0.021).Abbreviation: id, identification number.
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f1-opth-8-1369: Axial length difference between IOLMaster® (composite-20 IM) and Lenstar®.Notes: Points outside limits labelled by subject id. Lenstar® standard-5, Haag-Streit AG (Koeniz, Switzerland); IOLMaster® composite-5; IOLMaster® composite-20, Carl Zeiss Meditec AG (Jena, Germany). The dotted line signifies the mean difference in axial length (0.021).Abbreviation: id, identification number.

Mentions: The difference in AL with both devices is illustrated in Figure 1. The measurements acquired by the standard-5 LS method were statistically significantly longer (P=<0.001) compared with the composite-5 IM and composite-20 IM. These differences are not likely to be clinically significant. The difference in K readings acquired with the two devices is illustrated in Figure 2. The differences in ACD with the two devices are illustrated in Figure 3. These differences are not likely to be clinically significant. There was no difference between the two composite methods (P=0.871).


Axial length measurement acquisition rates of two optical biometers in cataractous eyes.

Epitropoulos A - Clin Ophthalmol (2014)

Axial length difference between IOLMaster® (composite-20 IM) and Lenstar®.Notes: Points outside limits labelled by subject id. Lenstar® standard-5, Haag-Streit AG (Koeniz, Switzerland); IOLMaster® composite-5; IOLMaster® composite-20, Carl Zeiss Meditec AG (Jena, Germany). The dotted line signifies the mean difference in axial length (0.021).Abbreviation: id, identification number.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4114915&req=5

f1-opth-8-1369: Axial length difference between IOLMaster® (composite-20 IM) and Lenstar®.Notes: Points outside limits labelled by subject id. Lenstar® standard-5, Haag-Streit AG (Koeniz, Switzerland); IOLMaster® composite-5; IOLMaster® composite-20, Carl Zeiss Meditec AG (Jena, Germany). The dotted line signifies the mean difference in axial length (0.021).Abbreviation: id, identification number.
Mentions: The difference in AL with both devices is illustrated in Figure 1. The measurements acquired by the standard-5 LS method were statistically significantly longer (P=<0.001) compared with the composite-5 IM and composite-20 IM. These differences are not likely to be clinically significant. The difference in K readings acquired with the two devices is illustrated in Figure 2. The differences in ACD with the two devices are illustrated in Figure 3. These differences are not likely to be clinically significant. There was no difference between the two composite methods (P=0.871).

Bottom Line: Standard-5 LS AL measurements were significantly shorter (P<0.001).IOLMaster(®) 500 average K measurements were significantly steeper (P<0.001).AL, ACD, and average Ks were statistically different between the two biometers, although the differences were clinically insignificant.

View Article: PubMed Central - PubMed

Affiliation: The Ohio State University Wexner Medical Center, Columbus, OH, USA.

ABSTRACT

Purpose: To compare the ability of two optical biometers to acquire the axial length (AL) measurement in cataractous eyes.

Methods: This prospective, comparative, single-center study comprised 105 eyes (63 patients). AL was acquired by the composite mean value of 20 measurements (composite-20 IM) and five measurements (composite-5 IM) (IOLMaster(®) 500 version 7.1 software), and the standard mean value of the first five measurements (standard-5 LS, Lenstar LS 900(®)). Anterior chamber depth (ACD) and average keratometry (K) readings were acquired.

Results: AL was acquired in 83.8%, 92.4%, and 84.8% of eyes for the composite-5 IM, composite-20 IM, and standard-5 LS, respectively. Standard-5 LS AL measurements were significantly shorter (P<0.001). IOLMaster(®) 500-acquired ACD (corneal epithelium to lens) measurements were significantly shorter (P<0.001). IOLMaster(®) 500 average K measurements were significantly steeper (P<0.001).

Conclusion: The composite-20 IM had the highest AL acquisition success rate of the three versions evaluated. AL, ACD, and average Ks were statistically different between the two biometers, although the differences were clinically insignificant.

No MeSH data available.