Characterisation of visual work distance and mobile phone usage patterns in different professional profiles

Session Details

Session Title: Multifocal IOLs II

Session Date/Time: Monday 16/09/2019 | 08:30-10:30

Paper Time: 10:02

Venue: Free Paper Forum: Podium 1

First Author: : F.Soler SPAIN

Co Author(s): :    A. Sánchez-García   N. López-Gil   M. Jaskulski   D. Piñero                    

Abstract Details

Purpose:

To analyze and characterize the visual distance patterns at the workplace for different types of professional activities, as well as for the use of the mobile phone.

Setting:

Dr. Fernando Soler Foundation, Elche, Spain and Department of Optics, Pharmacology and Anatomy, University of Alicante, Spain.

Methods:

A screening study was carried out to evaluate 300 patients at their individual working environment. Medical history, LogMAR uncorrected distance (UDVA) and near visual acuity (UNVA), accommodative amplitude, stereopsis with Gabor gratings and cover test was evaluated in all cases. Working distance was measured with a calibrated ruler, while mobile phone distance was measured with the VisionApp application developed by the University of Murcia. The illumination in the work area was also measured with a luxmeter. The arm length and the near point of convergence (NPC) were also measured with a calibrated ruler

Results:

Mean work distance was 54.90  13.60 cm, ranging from 35 to 73 cm, whereas mean mobile phone distance was 29.53  5.18 cm, ranging from 19.26 to 36.04 cm). The difference between these two distances was statistically significant (p <0.001). Statistically significant correlations were found between work and mobile phone distances (r=0.69, p<0.01), as well as between mobile phone distance and arm length (r=0.51, p<0.05).

Conclusions:

There is a very significant variability between individuals in work distance and mobile phone distance. This variability must be considered when implanting multifocal intraocular lenses to optimise the outcome and to adapt the best design to the specific needs of the patient.

Financial Disclosure:

research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented