Effects on Ocular Dryness and Optical Quality when Watching Movies Using a Virtual Reality Device

Abstract

Purpose: The use of computers spread among the population, both for work and leisure purposes. This poses an increased risk factor for dry eye disease, a multifactorial disease influencing the surface of the eye. With the recent increasing usage of head-mounted displays, it is critical to determine whether or not they have the same impact on the tear film as conventional screens. Methods:The experiment was divided into three parts, where ten subjects participated. A baseline measurement was taken on the first day, and two additional measurements were retaken after 90 minutes of usage of a head-mounted display or a conventional screen. Results:No statistically significant differences were found in the impact on the tear film, neither in blink frequency nor duration while using a head-mounted display. Humidity and temperature in the periocular environment increased in the first 30 minutes of HMD usage, then remained stable while the oxygen level decreased. In comparison, temperature and humidity were lower, with oxygen levels increasing while using a conventional screen to become stable over 90 minutes. Subjects perceive subjectively less dry eye after using an HMD. Conclusions:Although no final conclusions can be drawn from the results, there is a tendency toward HMDs having a slightly better impact on the tear film than conventional screens.

Tear Film Break-Up Time before and after Watching a VR Video: Comparison between Naked Eyes and Contact Lens Wearers

“…This could lead to subjective symptoms of dry eyes. Based on the outcome of the score (OSDI) questionnaire, it was reported that the aforementioned symptoms increased when using VR devices [12]. Prolonged use of digital screens, known as visual display terminals (VDTs), has become common, leading to increased visual complaints like eye strain and dryness.…”