Table 1.
Age and number of eyes by age decade at each site.
Table 2.
Age and number of eyes by age decade in each area.
Fig 1.
The choriocapillaris plus Sattler’s (CS) layer and the choroidal large vessel layer.
(A-D) Choroidal thickness of each layer. The bold yellow arrow indicates the choriocapillaris plus Sattler’s layer, the bold blue arrow the choroidal large vessel layer. Total subfoveal choroidal thickness is the sum of these two layers (between the yellow and blue arrows). (B1) The green line represents the bottom of the RPE, the two yellow arrows the thickness of the subfoveal choroid. (B2) This image is the expanded image of the yellow square portion of B1. (E) Early Treatment Diabetic Retinopathy Study (ETDRS) macular map sectors. The central area represents the fovea. Mean macular thickness was calculated for the superior (S), inferior (I), temporal (T), and nasal (N) areas, all for diameters of 1 mm, 3 mm, and 6 mm. We defined ‘C’ as the “mean foveal choroidal thickness area”, and each of the other four areas as follows: ‘S1+S2 = mean superior choroidal thickness area’, ‘I1+I2 = mean inferior choroidal thickness area’, ‘N1+N2 = mean nasal choroidal thickness area’, and ‘T1+T2 = mean temporal choroidal thickness area’.
Fig 2.
Choroidal thicknesses at five measurement sites by age.
Scatterplot for age and choroidal thickness at each site, as measured at a single point, are shown. There is a negative correlation between age and choroidal thickness, and the nasal site of the choroid appears to be the thinnest, followed by the temporal, inferior, superior, and foveal sites.
Table 3.
Mean choroidal thicknesses at each of the five sites.
Table 4.
Correlations among the mean choroidal thicknesses of the five sites.
Table 5.
Mean choroidal thicknesses of each of the five areas.
Fig 3.
Mean choroidal thickness at each site by age.
Scatterplot of age and the mean choroidal thickness, by sector, at each measurement site are shown. There is a negative correlation between age and mean choroidal thickness. The choroid appears to be thinnest at the nasal site.
Table 6.
Correlations of mean choroidal thickness values between each pair of areas.
Fig 4.
Scatterplot of age and subfoveal CS layer choroidal thickness, measured at a single point, are presented. There is a negative correlation between age and the choroidal thickness of the CS layer (p<0.0001, y = 125.71–1.08×age. R2 = 0.29).
Fig 5.
Subfoveal large vessel layer thickness.
Scatterplot for age and subfoveal large vessel layer choroidal thickness measured at a single point are presented. There is a negative correlation between age and the choroidal thickness of the large vessel layer (p = 0.0209, y = 250.07–0.87×age. R2 = 0.056).
Table 7.
CS layer and large vessel layer choroidal thickness by age decade.