“…Several eligible papers considered more than one health problem, and as a result we identified 19 8,10,15,16,20-23,25,26,31,35-39,41,43,44 papers on hearing problems, 14 papers on visual problems, 8,16,21-23,25,31,35-38,40,43,44 15 papers related to mental health, 11,13,14,17,21,22,28,33,35-38,40,43,44 15 papers related to other health problems (musculoskeletal, cardiovascular, epilepsy, diabetes and allergy and asthma), 8,9,12,15,16,20,23,29,30,35-38,40,42 and 12 papers related to medication. 7,9,18,19,25,27,29,30,31,32,34,40…”