(A) Computation of LI for the GCL-IPL using the nasal (N) and temporal (T) sector GCL-IPL (GI) thickness values of both eyes, excluding superior (S) and inferior (I) sectors since they overlapped the vertical meridian. (B) Plot comparing GCL-IPL thicknesses in the affected or unaffected hemiretinas (paired t-test, 95% CI = 5.212 to 10.60, t42 = 5.921, P = < 0.0001). (C) Plot of LIGCL-IPL against time since stroke (linear regression, R2 = 0.2703, 95% CI (y-intercept) = 0.018 to 0.057, P = 0.0004).