Investigation of macular and optic nerve head structural changes using spectral domain optical coherence tomography in internal carotid artery stenosis.

The average macular thickness and measurements of outer macular quadrants in the ICA stenosis group were lower than in the control group. Macular changes may occur before symptomatic ocular ischemic syndrome (OIS). SD-OCT macular measurements may be beneficial in the early detection of OIS due to ICA stenosis.