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Effect of the Eye Tracking System on the Reproducibility of Measurements Obtained With Spectral-domain Optical Coherence Tomography in Glaucoma.
- Source :
-
Journal of glaucoma [J Glaucoma] 2017 Jul; Vol. 26 (7), pp. 638-645. - Publication Year :
- 2017
-
Abstract
- Purpose: The purpose of this study was to evaluate whether the eye tracking system (ETS) improved the reproducibility of a single circle peripapillary retinal nerve fiber layer (RNFL) measurement acquired with spectral-domain optical coherence tomography (OCT).<br />Materials and Methods: The sample comprised 205 individuals divided into 2 groups according to intraocular pressure and visual field outcomes. A total of 100 healthy individuals and 105 patients with open-angle glaucoma underwent imaging of the optic nerve head with OCT 3 times during the same session and 2 additional times in subsequent sessions (30 days apart). Intraclass correlation coefficient (ICC), coefficient of variation, and test-retest variability were calculated for the RNFL thickness acquired with and without the ETS enabled, and compared.<br />Results: The glaucoma group mainly comprised patients with moderate glaucoma (mean deviation of standard automated perimetry, -6.73±6.2 dB). The RNFL thicknesses did not differ between acquisitions with or without the ETS activated and disabled. All ICCs were >0.9 in the control and glaucoma groups with or without the ETS activated. The best parameter in the intersession analysis (with ETS activated) was global RNFL thickness (ICC, 0.95; coefficient of variation, 2.7%; and test-retest variability, 2.87 μm). The reproducibility and repeatability of RNFL measurements did not differ significantly between acquisitions with or without the ETS in either group.<br />Conclusions: The reproducibility of peripapillary RNFL thicknesses acquired with OCT was excellent. The variability between OCT measurements did not decrease with the ETS activated.
- Subjects :
- Adult
Aged
Female
Glaucoma, Open-Angle physiopathology
Humans
Intraocular Pressure physiology
Male
Middle Aged
Prospective Studies
Reproducibility of Results
Tonometry, Ocular
Visual Acuity physiology
Visual Fields physiology
Eye Movements
Glaucoma, Open-Angle diagnosis
Nerve Fibers pathology
Optic Disk pathology
Retinal Ganglion Cells pathology
Tomography, Optical Coherence methods
Subjects
Details
- Language :
- English
- ISSN :
- 1536-481X
- Volume :
- 26
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- Journal of glaucoma
- Publication Type :
- Academic Journal
- Accession number :
- 28557823
- Full Text :
- https://doi.org/10.1097/IJG.0000000000000690