concerned /kənˈsɜːnd/ adjective
WORRIED › worried: [+ that] I am very concerned that class sizes seem to be growing. People are becoming more concerned about what they eat. → Opposite unconcerned AFFECTED [never before noun] › involved in something or affected by it: A letter will be sent out to everyone concerned.
as far as sb is concerned › used to show what someone thinks about something: As far as our customers are concerned, price is the main consideration.
as far as sth is concerned › used to tell someone what you are talking about: As far as college is concerned, everything is fine.