Infra ocular pressure rises in ?

Ans. is 'a' i.e., Intubation & laryngoscopy Laryngoscopy and intubation of trachea can dramatically increase intraocular pressure to a values as high as 40 mm Hg. Administration of intravenous lignocaine prior to intubation has been found to prevent an increase in IOR IOP changes with LMA inseion are less than those following tracheal intubation.