Abstract PURPOSE: To compare retinal thickness and volume measurements obtained with Stratus time domain optical coherence tomography (OCT) and spectral domain scanning laser ophthalmoscope OCT (SD-SLO/OCT). METHODS: In a cross-sectional study, 52 eyes with a normal macula, 30 eyes with retinal oedema, and 10 eyes with a myopia higher than 6 D have been evaluated with both time domain OCT (TD-OCT, Stratus OCT, Carl Zeiss Meditec, USA) and SD-SLO/OCT (OTI, Toronto, Canada). Retinal thickness and volume measurements in the nine areas of the 6-mm ETDRS ring were compared. Artefacts were defined as the discordance between the automatically detected anterior and posterior retinal boundaries and the boundaries detected by the examiner. RESULTS: Artefacts were more frequent with TD-OCT (35 vs26%). Mean retinal thickness was significantly higher with SD-SLO/OCT by 30.1 microm (+/-25.8) (P=0.003) in presence of the artefacts and by 39.2 microm (+/-25.8) (P=0.003) after their exclusion. The correlation between the two retinal thickness data sets before exclusion of the artefacts (r=0.59, P<0.001) increased after their removal (r=0.84, P<0.001). A strong correlation was present between the two retinal volume data sets before (r=0.94, P<0.001) and after exclusion of the artefacts (r=0.96, P<0.001). CONCLUSIONS: SD-SLO/OCT produced fewer artefacts than Stratus TD-OCT. This could be attributed to the greater resolution and acquisition speed of SD-SLO/OCT. The macular retinal thickness values measured with SD-SLO/OCT were significantly higher than those measured with Stratus TD-OCT. Retinal volumes measured with Stratus TD-OCT and SD-SLO/OCT were strongly correlated.

Comparison of time domain Stratus OCT and spectral domain SLO/OCT for assessment of macular thickness and volume / Forte, R; Cennamo, Gl; Finelli, Ml; DE CRECCHIO, Giuseppe. - In: EYE. - ISSN 0950-222X. - STAMPA. - 23:(2008), pp. 2071-2078. [10.1038/eye.2008.363]

Comparison of time domain Stratus OCT and spectral domain SLO/OCT for assessment of macular thickness and volume.

DE CRECCHIO, GIUSEPPE
2008

Abstract

Abstract PURPOSE: To compare retinal thickness and volume measurements obtained with Stratus time domain optical coherence tomography (OCT) and spectral domain scanning laser ophthalmoscope OCT (SD-SLO/OCT). METHODS: In a cross-sectional study, 52 eyes with a normal macula, 30 eyes with retinal oedema, and 10 eyes with a myopia higher than 6 D have been evaluated with both time domain OCT (TD-OCT, Stratus OCT, Carl Zeiss Meditec, USA) and SD-SLO/OCT (OTI, Toronto, Canada). Retinal thickness and volume measurements in the nine areas of the 6-mm ETDRS ring were compared. Artefacts were defined as the discordance between the automatically detected anterior and posterior retinal boundaries and the boundaries detected by the examiner. RESULTS: Artefacts were more frequent with TD-OCT (35 vs26%). Mean retinal thickness was significantly higher with SD-SLO/OCT by 30.1 microm (+/-25.8) (P=0.003) in presence of the artefacts and by 39.2 microm (+/-25.8) (P=0.003) after their exclusion. The correlation between the two retinal thickness data sets before exclusion of the artefacts (r=0.59, P<0.001) increased after their removal (r=0.84, P<0.001). A strong correlation was present between the two retinal volume data sets before (r=0.94, P<0.001) and after exclusion of the artefacts (r=0.96, P<0.001). CONCLUSIONS: SD-SLO/OCT produced fewer artefacts than Stratus TD-OCT. This could be attributed to the greater resolution and acquisition speed of SD-SLO/OCT. The macular retinal thickness values measured with SD-SLO/OCT were significantly higher than those measured with Stratus TD-OCT. Retinal volumes measured with Stratus TD-OCT and SD-SLO/OCT were strongly correlated.
2008
EYE
Comparison of time domain Stratus OCT and spectral domain SLO/OCT for assessment of macular thickness and volume / Forte, R; Cennamo, Gl; Finelli, Ml; DE CRECCHIO, Giuseppe. - In: EYE. - ISSN 0950-222X. - STAMPA. - 23:(2008), pp. 2071-2078. [10.1038/eye.2008.363]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/345977
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