Lumbar puncture is a procedure which is done to collect cerebrospinal fluid for laboratory analysis, Measure the pressure of your cerebrospinal fluid, Inject spinal anesthetics, chemotherapy drugs or other medications, Inject dye (myelography) or radioactive substances (cisternography) into cerebrospinal fluid to make diagnostic images of the fluid's flow. It is not used as a form of treatment. Await the results of the test and also inform your neurologist of the improvement of vision after the lumbar puncture as it is a significant finding.