Posters

Structural changes in the aging choroid assessed with swept source-optical coherence tomography

Poster Details

First Author: P.Calvo SPAIN

Co Author(s):    F. Bartol   B. Abadia   C. Isanta   O. Ruiz Moreno   A. Ferreras                 

Abstract Details



Purpose:

To study structural changes of the choroidal thickness between old and young healthy adults originated from swept source-optical coherence tomography (SS-OCT).

Setting:

Miguel Servet University Hospital, Zaragoza, Spain

Methods:

Prospective, cross-sectional study, including 30 eyes of 15 young adults and 62 eyes of 31 aged patients. After obtaining 30 lines of a 9.0x9.0 mm cube SS-OCT scan centreed the fovea, the mean thickness of the 900 points was plotted. Five zones depending on choroidal thickness (zone 1 <155μm, zone 2 155-180μm, zone 3 180-205μm, zone 4 205-230μm and zone 5 >230μm) were established and compared between groups using Student’s t-test. Macular choroidal thickness measures were obtained with the Triton DR1 optical coherence tomography (Triton DR1 OCT, Topcon).

Results:

Mean age was 28.34 ± 4.07 in the young group and 67.37 ± 7.9 years in the aged group. No differences were found in intraocular pressure or axial length (p>0.05). The choroid was significantly thinner in aged patients at zones 3 (p<0.001), 4 (p<0.001) and 5 (p=0.03). Peripheral zones (1 and 2) did not show significant differences (p>0.05) between groups.

Conclusions:

Choroidal thickness assessed with SS-OCT showed a decrease with age, but this reduction does not affect equally all macular area. Some choroidal zones are clearly more sensitive to aging.

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