Changes in Intraocular Pressure While Using Electronic Devices in Sitting and Supine Positions

Objective: This study aimed to compare intraocular pressure (IOP) measurements in sitting and supine positions while exposed to electronic devices. Material and Methods: A total of 26 participants (52 eyes) had their IOP measured by Keeler Pulairs tonometer in sitting and supine positions both before and after using a mobile phone. The IOP was initially measured while sitting, followed by 2 minutes in a supine position. The IOP was then measured again after watching the movie for 30 minutes in each position under daylight conditions. Postural IOP changes due to exposure to electronic devices were measured and compared. Results: The IOP exhibited a statistically significant increase (p-value<0.05) in the supine position compared to the sitting position, both before and after exposure to the electronic device. Following a 30-minute period of exposure, the IOP was significantly reduced by 0.7 mmHg in the sitting position (from 12.7 mmHg to 12.0 mmHg, p-value<0.05). However, there were no significant differences observed in the supine position (13.3 mmHg versus 13.3 mmHg, p-value>0.05). Conclusion: Different postural positions have an effect on IOP, as IOP is higher in the supine position than in the seated position. There was a decline in the IOP after 30 minutes of exposure in the sitting position. However, there are no changes in IOP that occur in the supine position. These findings suggest a potential link between mobile phone usage and postural changes in IOP, which could have implications for ocular health in individuals who frequently use mobile devices.