The Effect of 3-dimentional Televisions on Accommodation Facility

To compare the accommodation facility response changes between three-dimensional and two-dimensional television viewers watching a similar visual stimulus for 90 minutes.
The study enrolled 66 students, aged between 18 and 25 years. The participants were randomly divided into one of the two groups; 3D viewers and 2D viewers. In each group, 3D or 2D movies was shown on 42” display for 90 minutes. Monocular and binocular accommodation facility, visual acuity and fixation disparity were measured before and after the movies and changes in the accommodation facility response were compared between the two groups. Statistical analyzes were performed using the SPSS statistical software, version 18.0.
The mean participant age was 20.70±1.20 and 21.20±1.20 in the 3D and 2D groups, respectively. In the 3D group, the mean accommodation facility for right eye, left eye and both eyes was 12.15 ± 1.73, 12.42 ± 2.03 and 10.75 ± 1.90, respectively, before intervention, and 11.33 ± 1.77, 11.51 ± 2.07 and 9.96 ± 2.06, respectively, after intervention. The mean fixation disparity was 0 ± 0 before and after intervention. The mean visual acuity was 10/10 before and after intervention. There was a statistically significant change (p Watching 3D televitions can decrease the facility of accommodation immediately after watching the movies but, it is not clinically considerable.