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Graefe's Archive for Clinical and Experimental Ophthalmology

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01-10-2011 | Basic Science

Choroidal thickness measurement in healthy Japanese subjects by three-dimensional high-penetration optical coherence tomography

Authors: Tetsuya Agawa, Masahiro Miura, Yasuhi Ikuno, Shuichi Makita, Tapio Fabritius, Takuya Iwasaki, Hiroshi Goto, Kohji Nishida, Yoshiaki Yasuno

Published in: Graefe's Archive for Clinical and Experimental Ophthalmology | Issue 10/2011

Abstract

Background

We performed retinal and choroidal thickness mapping by three-dimensional high-penetration optical coherence tomography (OCT) and evaluated the choroidal thickness distribution throughout the macula in healthy eyes.

Methods

Forty-three eyes of 43 healthy Japanese volunteers were evaluated by 1060-nm swept-source OCT. The eyes were scanned with a three-dimensional raster scanning protocol, and the mean retinal and choroidal thicknesses of the posterior sectors were obtained. The sectors were defined by the Early Treatment Diabetic Study (ETDRS) layout. These data were compared by age (23–56 years), spherical equivalent refractive error (between +0.9 D and −10.3 D), and axial length (22.9–27.6 mm).

Results

The mean retinal and choroidal thicknesses of the ETDRS area were 284 ± 14 μm and 348 ± 63 μm respectively. The mean regional choroidal thicknesses in the nasal inner macula and nasal outer macula were significantly smaller than those in all other sectors. The mean regional choroidal thickness in most sectors showed a significant negative correlation with axial length and a significant positive correlation with refractive error. In eyes with a long axial length (>25.0 mm), the mean regional choroidal thickness of five sectors showed a significant negative correlation with age. The coefficient of variation of choroidal thickness between sectors showed a significant negative correlation with axial length, and a positive correlation with refractive error. The mean retinal thickness in each sector was not significantly correlated with the mean choroidal thickness, age, axial length, or refractive error.

Conclusions

The choroidal thickness map showed a distribution entirely different from the retinal thickness map. Choroidal thickness varies significantly with location, axial length, refractive error, and age. These variations should be considered when evaluating choroidal thickness.

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Title: Choroidal thickness measurement in healthy Japanese subjects by three-dimensional high-penetration optical coherence tomography
Authors: Tetsuya Agawa
Masahiro Miura
Yasuhi Ikuno
Shuichi Makita
Tapio Fabritius
Takuya Iwasaki
Hiroshi Goto
Kohji Nishida
Yoshiaki Yasuno
Publication date: 01-10-2011
Publisher: Springer-Verlag
Published in: Graefe's Archive for Clinical and Experimental Ophthalmology / Issue 10/2011
Print ISSN: 0721-832X
Electronic ISSN: 1435-702X
DOI: https://doi.org/10.1007/s00417-011-1708-7

At a glance: The STEP trials

Springer Medicine

Choroidal thickness measurement in healthy Japanese subjects by three-dimensional high-penetration optical coherence tomography

Abstract

Background

Methods

Results

Conclusions

At a glance: The STEP trials

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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