Digital eye strain (computer vision syndrome)

What it is

Digital eye strain, also called computer vision syndrome, is a group of symptoms caused by prolonged screen use. It does not cause lasting damage to the eyes, but it can be uncomfortable and affect concentration during the day.

Common symptoms

Symptoms build up during or after screen time.

• Tired, sore or aching eyes
• Dry or gritty eyes from reduced blinking
• Headaches and difficulty focusing
• Temporary blurred vision or neck and shoulder ache

Causes and risk factors

We blink less and focus at a fixed close distance when using screens, which tires the focusing muscles and dries the surface of the eye. Glare, poor lighting, small text, and an uncorrected glasses prescription all make it worse.

Self-care and prevention

Simple habits make a big difference: follow the 20-20-20 rule by looking at something 20 feet away for 20 seconds every 20 minutes, blink fully and use lubricating drops, position the screen slightly below eye level, reduce glare, and make sure your glasses prescription is up to date.