Plz i need to know why.?

b4 isk ths qustion i need 2kno yk? th othrday whn i wz mstrbting my pp stpd wrkng. ths s srs bcz ind 2 mstrbt. if i dt 2ce a dy i wi// go blind. ths ssue is so imprtnt i wl sll my vrgty 2 woevr ansers. k, thx 4 the help.