What is a common cause of eye strain when using digital screens?

A common cause of eye strain when using digital screens is the lack of regular screen breaks. When individuals focus on a screen for prolonged periods without taking breaks, they tend to blink less often, resulting in dryness and discomfort. This continuous focus can also lead to fatigue of the eye muscles, which can manifest as headaches, blurred vision, and general discomfort.

Taking regular breaks allows the eyes to relax and reset, reducing the risk of strain. Eye care professionals often recommend the 20-20-20 rule—every 20 minutes, look at something 20 feet away for at least 20 seconds—to help mitigate the effects of prolonged screen use. While the other options might contribute to various visual issues, they are less directly linked to the phenomenon of eye strain specifically caused by constant screen exposure.