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Naoko Kakiuchi, Hiroto Terasaki, Shozo Sonoda, Hideki Shiihara, Taiji Sakamoto; Regional difference of choroidal structure by wide-field optical coherence tomography. Invest. Ophthalmol. Vis. Sci. 2018;59(9):276.
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© ARVO (1962-2015); The Authors (2016-present)
To compare the choroidal structure in the submacular region to that in the perimacular region in the images obtained by widefield optical coherence tomography(OCT).
Design: Prospective, cross-sectional study.Methods: Setting: Single center study.Study Population: Thirty eyes of 30 healthy volunteers (15 men) were studied.Observation Procedures: Twelve wide-field radial circumferential scans were recorded with enhanced depth imaging OCT images from the 30 healthy eyes. These choroidal images were obtained from the macular zone and the perimacular zone. The size of the luminal and stromal areas of the choroid was determined separately. The zones were subdivided into the superior, inferior, nasal, and temporal sectors. The total choroidal area, the luminal and stromal areas, and the luminal ratio, luminal area/stromal area, of each sector were compared.Main Outcome Measures: Regional differences in the choroidal structure.
All of the parameters of the choroidal structure were largest in the superior sector followed by the temporal, inferior, and nasal sectors. The coefficients of variation were larger in the peri-macular zone than in the macular zone. The total choroidal area of the superior sector was significantly larger than the inferior sector in the perimacular zone (P<0.01), and the ratio of the superior/inferior luminal area was 66.1 %/63.5 % (P<0.01).
The ratios of the luminal areas of the choroid in the widefield OCTimages are well maintained in the macular zone but not in the perimacular zone.
This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.
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