Show mexican biologist studies optic parasite mexico city prof isaac rena oi of the national institute who tins ins hern been making a study of a parti site which benuses much hu man blindness in central america has hu aou cad tits hta recent research has re healed important data regarding the subject information which he bel believes leves will nill be of vast assIst assistance anee in combating the called ml mi if illaria Is to be made public soon he sald blindness caused b by y the attack of this paraslee on oil the optic nerve Is commonest in the mexican states of oaxaca and vuella and in guatemala |