a 50 year-old man was referred with history of acute ataxia and lower extremity paresthesia 10 days after general anesthesia with nitrous oxide. cervical mri showed long hypersignal lesion in posterior segment of the cord. blood analysis revealed vitamin b12 deficiency. nitrous oxide-induced myelopathy should be considered in patients who develop acute neurological manifestation after general a...

In retinal surgery clinicians access the internal volume of eyeball through small scale trocar ports, typically 0.65 mm in diameter, to treat vitreoretinal disorders like idiopathic epiretinal membrane and age-related macular holes. The treatment these conditions involves removal thin layers diseased tissue, namely limiting membrane. These membranes have an average thickness only 60 ?m 2 respec...