What factor is crucial for preventing eye strain while working on computers?

Preventing eye strain while working on computers is strongly linked to managing glare, which can be quite distracting and uncomfortable for the eyes. Glare from windows or other light sources can create a harsh visual environment, making it difficult for the eyes to focus properly. By reducing glare, individuals can maintain better visual comfort and reduce the risk of fatigue or strain.

Using a black background, while it may help some users by providing higher contrast, does not specifically address glare as a critical factor. Avoiding social media is more about managing distractions than addressing physical strain on the eyes. Lastly, using smaller screens may not effectively reduce eye strain; in fact, it could lead to increased strain if users find themselves squinting or coming closer to the screen to read text. Therefore, ensuring a glare-free working environment is pivotal in maintaining eye health during prolonged computer use.