Prevalence of visual symptoms among visual display unit users in Owerri Imo State

The increasing number of cases of ocular and non-ocular symptoms generally termed, the "Computer Vision Syndrome" (CVS) as a result of the ubiquitous use of computers and mobile computing devices. Computer-related asthenopia might take an epidemic form if it is not put on check. This study was undertaken to find out the prevalence of the visual complaints among computer and related users in Owerri, Imo State aimed at determining if the symptoms are prevalent in equal proportion among VDU and Non-VDU users. A total of 332 selected persons (male and female) between the ages of 16 - 45yrs from schools, banks, offices and other establishments who use VDUs and 1hr/day within Owerri Municipal Area were administered with structured questionnaire. Study revealed VDU users presentation with Headache (17.72%), Ocular Pain (16, 52%), Eyestrain (15.40), Lacrimation (14, 60%), Double Vision (11.75%), Burning &Irritation (10.09%), Itching (7.83%), Dryness (3.58%) and Redness (2.52%). All the Symptoms (dryness, eyestrain, headache,   itching, lacrimation, ocular pain and redness) except double vision are statistically significant (P<0.05). Furthermore, these symptoms are neither age nor gender related. Also, individuals as well as work-related factors were found to be predictive of these visual complaints. Headache, ocular pain, eyestrain, lacrimation, double vision, burning & irritation, itching, dryness and redness of the eye are the prevalent symptoms among VDU users in Owerri. The use of antiglare screen, filters or "radiation absorbing devices' to reduce and control light and reflections as well as adjustment shades, curtains or blinds in order to effectively control light levels throughout the day are however recommended.