What are the effects of long-term digital device use on vision?

Long-term digital device use has been significantly associated with digital eye strain, also known as computer vision syndrome. This condition manifests as a result of prolonged screen time, leading to symptoms such as eye dryness, discomfort, fatigue, and blurred vision. The strain occurs because individuals often blink less when focused on screens, causing their eyes to feel dry and fatigued.

Factors that contribute to these symptoms include glare from screens, poor lighting, improper viewing distances, and extended periods without breaks. The discomfort can be alleviated by practicing good visual habits, such as the 20-20-20 rule—taking a 20-second break to look at something 20 feet away every 20 minutes to help reduce strain.

In contrast, the other options do not accurately reflect the commonly recognized effects of long-term digital device use. For example, while there are ongoing discussions regarding the potential links between screen time and eye health, the direct correlation to increased risk of cataracts or permanent vision loss is not well-supported by current research. Improved night vision does not result from extensive digital screen usage; in fact, prolonged use often leads to the opposite effect, especially in low-light conditions.