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Influence of the job profile of a healthy population on visual working distances

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First Author: F.Soler SPAIN

Co Author(s):    D. Piñero Llorens   A. Sánchez-García   A. Molina-Martin   D. de Fez   V. Díaz   N. López-Gil     

Abstract Details

Purpose:

To analyze and characterize the visual work and mobile phone usage distance patterns in a large healthy population and how they can influence on the selection of a specific design of multifocal IOL

Setting:

Fundación Dr Soler de la Comunidad Valenciana, Elche, Alicante, Spain.

Methods:

Transversal study resulting from a screening campaign evaluating the visual status of professionals working in different companies. A total of 454 patients were revised with a mean age of 41.5 years, ranging from 20 to 64 years. A battery of screening tests was performed to all participants in a single session at the working environment of each of them, including measurement of the working distance (WD), arm length, and mobile phone usage distances (MPUD).

Results:

WD was significantly longer than MPUD (72.36±88.32 vs. 31.98±6.32 cm, p<0.001). Differences between WD and arm length (74.23±4.81 cm) did not reach statistical significance (p=0.792), but the difference with MPUD did reach it (p<0.001). WD was significantly longer in males than females (p<0.001), but no differences according to gender were found in MPUD (p=0.116). Likewise, no significant differences in WD and MPUD were found between individuals with exo and esophoria (p=0.353). Individuals working more than 2 hours with computers and/or digital devices showed a significantly shorter WD (93.82±148.61 vs. 61.21±12.35 cm, p<0.001), but no differences were observed in MPUD (p=0.527).

Conclusions:

The distance of use of the mobile phone is shorter than the WD. Likewise, WD varies significantly between individuals and professions, with shorter distances for users of computers/digital devices. This variability should be considered when implanting multifocal intraocular lenses to optimize the result and adapt the best design to the specific needs of the patient.

Financial Disclosure:

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