<prompt> All are true regarding METHANOL poisoning except:Hemodialysis should be done when serum methanol cencentration is above 50 mgdlFomepizole acts by inhibiting aldehyde dehydrogenaseHigh anion gap metabolic acidosis is seen in severe casesVisual disturbances are commonly seen  <response>: Ref: Katzung 12e p398 Fomepizole inhibits alcohol dehydrogenase and not aldehyde dehydrogenase Serum methanol concentration above 20 mgdl is an indication to sta treatment and above 50 mgdl is for Hemodialysis. Metabolic product formaldehyde and fornic acid is responsible for blindness and high anion gap metabolic acidosis. 