Sertraline, a selective serotonin reuptake inhibitor (SSRI), acts by increasing serotonin levels in the brain, potentially modulating neuronal hyperexcitability and reducing sensory processing abnormalities associated with Visual Snow Syndrome. By enhancing serotonergic neurotransmission, it may help mitigate the neurological dysregulation underlying visual disturbances and associated symptoms such as tinnitus and anxiety.