Related Experiment Video
Updated: Dec 10, 2025
10:46
Doppler Optical Coherence Tomography of Retinal Circulation
Published on: September 18, 2012
19.1K
Repeatability, reproducibility, and comparison of ocular biometry using a new optical coherence tomography-based
Adam Wylęgała1,2, Bartłomiej Bolek3,4, Robert Mazur3,4
1Ophthalmology Department, Railway Hospital, Panewnicka 65, 40-765, Katowice, Poland. awylegala@sum.edu.pl.
Scientific Reports
|September 4, 2020
Summary
The Revo NX and IOLMaster 500 provide comparable axial length measurements for cataract surgery. Both devices demonstrate excellent agreement and repeatability, allowing for interchangeable use in clinical practice.
Area of Science:
- Ophthalmology
- Biomedical Engineering
- Medical Device Technology
Background:
- Accurate axial length measurement is critical for intraocular lens (IOL) power calculation in cataract surgery.
- Existing devices like the IOLMaster 500 are widely used, but new technologies require validation.
Purpose of the Study:
- To compare the accuracy and repeatability of the new Revo NX device against the established IOLMaster 500 for axial length and anterior chamber depth measurements.
- To assess the inter-operator reproducibility of the Revo NX device.
Main Methods:
- A comparative study involving 100 eyes from 56 patients.
- Axial length and anterior chamber depth measurements were taken using both Revo NX and IOLMaster 500.
- Inter-operator repeatability and reproducibility were assessed using Bland-Altman analysis and intraclass correlation (ICC).
Main Results:
- Excellent agreement was found between Revo NX and IOLMaster 500 for both axial length (ICC=0.999) and anterior chamber depth (ICC=0.975).
- Revo NX demonstrated very high inter-operator repeatability, with ICC values ranging from 0.9929 to 0.9997 for all measured parameters.
- Differences in measurements between the two devices were statistically insignificant, supporting interchangeable use.
Conclusions:
- The Revo NX device offers a high level of accuracy and repeatability comparable to the IOLMaster 500.
- The Revo NX can be considered a reliable alternative for biometry in cataract surgery planning.
- Interchangeable use of Revo NX and IOLMaster 500 is supported by the study findings.
