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  Indian J Med Microbiol
 

Figure 3: Comparing images before (a and c) and after (b and d) navigation-guided optic canal decompression to illustrate the improvement in visual evoked potential and optical coherence tomography retinal nerve fiber layer of Case 2. (a) Visual evoked potential with extinguished waveform with a prolonged latency. (b) Improved waveform latency and amplitude. (c) Decreased thickness of nerve fibers in the nasal and inferior quadrants (left eye). (d) Increased retinal nerve fiber layer thickness in nasal and temporal quadrant postoperatively

Figure 3: Comparing images before (a and c) and after (b and d) navigation-guided optic canal decompression to illustrate the improvement in visual evoked potential and optical coherence tomography retinal nerve fiber layer of Case 2. (a) Visual evoked potential with extinguished waveform with a prolonged latency. (b) Improved waveform latency and amplitude. (c) Decreased thickness of nerve fibers in the nasal and inferior quadrants (left eye). (d) Increased retinal nerve fiber layer thickness in nasal and temporal quadrant postoperatively