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Figure 1: Showing (a) white arrow more than 90% stenosis in the right ICA origin (b) White arrow showing complete occlusion of left ICA from origin (c) white arrow showing bilateral dominant PCOM (d) Early right ICA angiogram showing non opacification of right ophthalmic artery (e) Delayed angiogram of right ECA showing reversal of flow in the right ophthalmic artery from ECA branches (f) Transcranial dopplar of right ophthalmic artery showing flow reversal

Figure 1:  Showing (a) white arrow more than 90% stenosis in the right ICA origin (b) White arrow showing complete occlusion of left ICA from origin (c) white arrow showing bilateral dominant PCOM (d) Early right ICA angiogram showing non opacification of right ophthalmic artery (e) Delayed angiogram of right ECA showing reversal of flow in the right ophthalmic artery from ECA branches (f) Transcranial dopplar of right ophthalmic artery showing flow reversal