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Comparison of corneal power obtained from VERION image-guided surgery system and four other devices

Overview of attention for article published in Clinical Ophthalmology, July 2017
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Title
Comparison of corneal power obtained from VERION image-guided surgery system and four other devices
Published in
Clinical Ophthalmology, July 2017
DOI 10.2147/opth.s137878
Pubmed ID
Authors

Hung-Yuan Lin, Hsin-Yang Chen, Han Bor Fam, Ya-Jung Chuang, Ronald Yeoh, Pi-Jung Lin

Abstract

To assess the corneal keratometric values obtained using the VERION image-guided surgery system and other devices. This study evaluated the right eyes of 115 cataract patients before intraocular lens (IOL) implantation through consecutive tests using 5 devices: VERION Reference Unit, Placido-based corneal topography (OPD-Scan III), monochromatic light-emitting diodes (LenStar LS900 and AL-Scan), and rotary prism technology (auto kerato-refractometer KR-8800). Analyzed parameters were corneal steep and flat keratometric values (Ks and Kf) and corneal astigmatism and axis. These parameters were evaluated using the one-sample two-tailed t-test and the 95% limits of agreement (95% LOAs) between the devices. The mean corneal cylinder value measurements were -0.97±0.63 D, -0.88±0.60 D, -0.90±0.69 D, -0.90±0.67 D, and -0.83±0.60 D with VERION, LenStar, AL-Scan (2.4 mm), OPD III, and KR-8800, respectively. Only KR-8800 showed a significant difference from VERION in the corneal cylinder value (P<0.05). The mean differences in the Kf and Ks of VERION compared to those of OPD III were 0.18±0.45 D and 0.17±0.38 D (P<0.05), respectively. The 95% LOAs of Bland-Altman analysis for the corneal astigmatism axis of the VERION with LenStar, AL-Scan (2.4 mm), OPD III, and KR-8800 were -26.25° to 58.71°, -20.61° to 47.44°, -25.03° to 58.98°, and -27.85° to 65.17°, respectively. None of the VERION parameters were significantly different from those of AL-Scan and LenStar. AL-Scan (2.4 mm zone) was especially similar to VERION. Wide LOAs are potential contributors to axis error in patients with toric IOL implants.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 22 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 22 100%

Demographic breakdown

Readers by professional status Count As %
Other 6 27%
Student > Master 2 9%
Student > Postgraduate 2 9%
Researcher 2 9%
Student > Bachelor 2 9%
Other 3 14%
Unknown 5 23%
Readers by discipline Count As %
Medicine and Dentistry 16 73%
Nursing and Health Professions 1 5%
Unknown 5 23%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 30 July 2017.
All research outputs
#10,234,393
of 11,536,085 outputs
Outputs from Clinical Ophthalmology
#1,249
of 1,460 outputs
Outputs of similar age
#222,340
of 263,286 outputs
Outputs of similar age from Clinical Ophthalmology
#20
of 21 outputs
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So far Altmetric has tracked 1,460 research outputs from this source. They receive a mean Attention Score of 3.3. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
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We're also able to compare this research output to 21 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.