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  Indian J Med Microbiol
 

Figure 2: (a) The ultrasound axial scan through the optic nerve preinjection with homogenous echogenecity of retro orbital path around the optic nerve. (b) The ultrasound lower vertical scan 10 minutes after injection and the axial scan pass below the red ring that demonstrate the hypo-echogenic pattern of local anesthetic fluid collection in the inferior surface of the nerve which starts to track in the direction of the muscle cone

Figure 2: (a) The ultrasound axial scan through the optic nerve preinjection with homogenous echogenecity of retro orbital path around the optic nerve. (b) The ultrasound lower vertical scan 10 minutes after
injection and the axial scan pass below the red ring that demonstrate the hypo-echogenic pattern of local anesthetic fluid collection in the inferior surface of the nerve which starts to track in the direction of the muscle cone