Characterization of working and mobile phone usage distances in common users of electronic devices and computers

AIM: To analyse and characterize the pattern of working mobile phone usage distances for common users electronic devices computers. METHODS: Transversal descriptive study consisting a screening campaign evaluating visual status different professionals with computers or more than 2h per day. A total 100 healthy patients mean age 41.2 (range: 20-62) years were revised subdivided according to job subgroups. battery tests was performed all participants in single session at environment each them, including measurement distance (WD), arm length, (MPUD). RESULTS: The WD significantly longer MPUD (61.22±12.35 vs 32.22±6.35 cm; P<0.001). Likewise, shorter length (74.44±4.65 4% (4/100) 91% (91/100) had 40 cm below, respectively. weak although statistically significant correlation found between (r=0.387, P<0.001) as well (r=0.260, P=0.009). Statistically differences detected among subgroups (P=0.021), being militaries compared university researchers lecturers (P=0.025). CONCLUSION: Working vary digital devices, use phones tends be closer distances. This parameter should considered when planning any type optical correction, especially presbyopia.