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Impact of retinal pigment epithelium pathology on spectral-domain optical coherence tomography-derived macular thickness and volume metrics and their intersession repeatability.
Hanumunthadu, Daren; Wang, Jin Ping; Chen, Wei; Wong, Evan N; Chen, Yi; Morgan, William H; Patel, Praveen J; Chen, Fred K.
Afiliación
  • Hanumunthadu D; NIHR Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, UK.
  • Wang JP; Centre for Ophthalmology and Visual Science (incorporating Lions Eye Institute), University of Western Australia, Perth, Western Australia, Australia.
  • Chen W; Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, China.
  • Wong EN; Centre for Ophthalmology and Visual Science (incorporating Lions Eye Institute), University of Western Australia, Perth, Western Australia, Australia.
  • Chen Y; Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, China.
  • Morgan WH; Centre for Ophthalmology and Visual Science (incorporating Lions Eye Institute), University of Western Australia, Perth, Western Australia, Australia.
  • Patel PJ; Centre for Ophthalmology and Visual Science (incorporating Lions Eye Institute), University of Western Australia, Perth, Western Australia, Australia.
  • Chen FK; Department of Ophthalmology, Royal Perth Hospital, Perth, Western Australia, Australia.
Clin Exp Ophthalmol ; 45(3): 270-279, 2017 Apr.
Article en En | MEDLINE | ID: mdl-28052542
BACKGROUND: To determine the impact of retinal pigment epithelium (RPE) pathology on intersession repeatability of retinal thickness and volume metrics derived from Spectralis spectral-domain optical coherence tomography (Heidelberg Engineering, Heidelberg, Germany). DESIGN: Prospective cross-sectional single centre study. PARTICIPANTS: A total of 56 eyes of 56 subjects were divided into three groups: (i) normal RPE band (25 eyes); (ii) RPE elevation: macular soft drusen (13 eyes); and (iii) RPE attenuation: geographic atrophy or inherited retinal diseases (18 eyes). METHODS: Each subject underwent three consecutive follow-up macular raster scans (61 B-scans at 119 µm separation) at 1-month intervals. MAIN OUTCOME MEASURES: Retinal thicknesses and volumes for each zone of the macular subfields before and after manual correction of segmentation error. Coefficients of repeatability (CR) were calculated. RESULTS: Mean (range) age was 57 (21-88) years. Mean central subfield thickness (CST) and total macular volume were 264 and 258 µm (P = 0.62), and 8.0 and 7.8 mm3 (P = 0.31), before and after manual correction. Intersession CR (95% confidence interval) for CST and total macular volume were reduced from 40 (38-41) to 8.3 (8.1-8.5) and 0.62 to 0.16 mm3 after manual correction of segmentation lines. CR for CST were 7.4, 23.5 and 66.7 µm before and 7.0, 10.9 and 7.6 µm after manual correction in groups i, ii and iii. CONCLUSIONS: Segmentation error in eyes with RPE disease has a significant impact on intersession repeatability of Spectralis spectral-domain optical coherence tomography macular thickness and volume metrics. Careful examination of each B-scan and manual adjustment can enhance the utility of quantitative measurement. Improved automated segmentation algorithms are needed.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Drusas Retinianas / Tomografía de Coherencia Óptica / Epitelio Pigmentado de la Retina / Atrofia Geográfica / Mácula Lútea Tipo de estudio: Observational_studies / Prevalence_studies / Risk_factors_studies Límite: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: Clin Exp Ophthalmol Asunto de la revista: OFTALMOLOGIA Año: 2017 Tipo del documento: Article Pais de publicación: Australia
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Drusas Retinianas / Tomografía de Coherencia Óptica / Epitelio Pigmentado de la Retina / Atrofia Geográfica / Mácula Lútea Tipo de estudio: Observational_studies / Prevalence_studies / Risk_factors_studies Límite: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: Clin Exp Ophthalmol Asunto de la revista: OFTALMOLOGIA Año: 2017 Tipo del documento: Article Pais de publicación: Australia