“…The rest of the articles were manually screened by the authors in order to meet the eligibility criteria. In the end, a total of 26 articles remained: five were retrospective studies [ 21 , 22 , 23 , 24 , 25 ], three were prospective studies [ 26 , 27 , 28 ], nine were case reports [ 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 ], six were case series [ 38 , 39 , 40 , 41 , 42 , 43 ], and three were observational cross-sectional studies [ 44 , 45 , 46 ]. Table 2 shows detailed information about the included studies on diplopia in other movement disorders (besides Parkinson’s disease).…”