Revista nº 814

López-Jiménez A, et al. | Choroidal thickness analysis in keratoconus patients 255 Actual Med. 2021; 106(814): 252- 259 CT reached its highest values in the subfoveal zone in both groups, and decreased progressively towards the periphery (Figure 2). CT was thinner in the nasal points. No significant differences were found in subfoveal CT (M) (351.48 ± 106.3 μm in the KC group and 365.35 ± 114.6 μm in the control group) (p=0.66). Significant lower CT was found in the KC in T6 (253.96 ± 88.95 μm and 309.39 ± 94.11 μm) (p<0,041). The other twelve studied locations did not reach significant differences between both groups. These results are summarized in Figure 2,3,4 and Table 2. All the CT measurements (13 locations), were higher in the control group, although statistically significant difference was only observed in T6, located 3000 μm temporal to the fovea. It was a surprise to find higher values in the control group, contrarily to our expectations based on the inflammatory theory of KC. M T1 T2 T3 T4 T5 T6 351,48 ± 106,37 μm 357,43 ± 109,78 μm 315,48 ± 102,07 μm 303,68 ± 97,77 μm 278,28 ± 99,68 μm 270,76 ± 79,56 μm 253,96 ± 88,95 μm 365,35 ± 114,64 μm 357,43 ± 109,78 μm 345,43 ± 103,27 μm 334,04 ± 102,35 μm 324,57 ± 98,45 μm 317,61 ± 90,45 μm 309,39 ± 94,11 μm p=0,666 p=0,458 p=0,318 p=0,299 p=0,113 p=0,063 p=0,041 Figure 2. Figure 2, 3 and 4. Mean CT distribution of the 13 measured locations in KC patients vs. age and gender-adjusted healthy controls. CT: choroidal thickness, KC: keratoconus. Figure 3. Figure 4 .