The 20‑20‑20 rule is a simple eye-care guideline recommended by ophthalmologists: every 20 minutes, take a 20‑second break to look at something at least 20 feet (about 6 meters) away. This helps reduce digital eye strain by relaxing the ciliary muscles that control your eye's focus.

Focus shifting exercises train your eyes' accommodation ability — the capacity to switch focus between near and far objects quickly. By intentionally alternating between close (~30 cm) and distant (~6 m) focal points, you strengthen the ciliary muscles and improve flexibility, which may reduce eye fatigue, headaches, and blurred vision after prolonged screen use.

Common symptoms include dry or watery eyes, blurred vision, difficulty focusing, headaches, neck and shoulder pain, increased sensitivity to light, and a burning or itching sensation in the eyes. These symptoms collectively are often referred to as Computer Vision Syndrome (CVS).

Blink Training guides you through conscious, complete blinks at regular intervals. People blink about 66% less frequently when staring at screens, leading to dry eyes. This mode prompts you to perform a full, gentle blink every few seconds over a 2‑minute session, helping to rehydrate and refresh your eyes naturally.

Absolutely. Open the Settings panel to adjust work intervals (1–120 minutes), rest durations (5–120 seconds), focus shift timings, and the number of shift rounds. You can also use the one‑click presets like Strict 20‑20‑20, Moderate 30‑30, or Pomodoro 25‑5 for quick configuration.

Yes — if you enable Desktop Notifications in Settings and grant browser permission, the tool will send a notification when it's time to rest or switch focus, even if you're working in another tab. Sound alerts are also available for audible reminders.

While individual studies vary, the 20‑20‑20 rule is widely endorsed by organizations like the American Optometric Association (AOA) and the American Academy of Ophthalmology (AAO) as an effective behavioral intervention to mitigate digital eye strain. Regular breaks give your eyes a chance to reset and re‑lubricate.

Yes! This tool is fully responsive and works on mobile devices, tablets, and desktops. The interface adapts to smaller screens, and you can keep the timer running while using other apps. For best results on mobile, keep the browser tab open.

During your 20‑second rest breaks, try these quick exercises: Palming (rub palms together and cup over closed eyes), Figure‑8 tracing (trace an imaginary figure 8 with your eyes), Near‑far focus (alternate looking at your thumb and a distant object), and gentle eye rolling in both directions.

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