1)저는(Jeo-Nun / I:In korea, we use another expressions for olders and youngers. If you will talk with younger, you can say '나는:Na-Nun' ) 길눈이(Gil-Nun-I : bad eyesight for find places) 어둡습니다(O-Dub-Sub-Ni-Da : can't see well).('길눈이 어둡습니다' is an idiom that literally means 'I have bad eyes to find places' , and it means 'bad with directions') So, you can say "Jeo-Nun Gil-Nun-I O-Dub-Sub-Ni-Da."/"저는 길눈이 어둡습니다." 2)Good luck to U :)