Digital eye strain, also known as computer vision syndrome, refers to a group of eye and vision-related problems that result from prolonged use of digital devices like computers, tablets, and smartphones. Symptoms can include dry eyes, blurred vision, and headaches, often caused by factors such as screen glare, poor lighting, and improper viewing distances. To reduce the risk of digital eye strain, it is recommended to follow the 20-20-20 rule, which suggests taking a 20-second break to look at something 20 feet away every 20 minutes. Additionally, adjusting screen brightness, using anti-glare filters, and maintaining proper posture can help alleviate discomfort.