Blue light and eye health

{{whyLabel}}: Reducing short-wavelength blue light in the evening helps maintain your natural circadian rhythm and melatonin production.

{{howLabel}}:

• On Windows: Search for 'Night Light' in settings and schedule it from sunset to sunrise.
• On macOS/iOS: Enable 'Night Shift' in Display settings.
• On Android: Turn on 'Eye Comfort Shield' or 'Blue Light Filter'.

{{doneWhenLabel}}: All primary screens automatically shift to warmer tones after sunset.

{{whyLabel}}: Incorrect screen placement causes the eyes to work harder to focus and can lead to neck pain.

{{howLabel}}:

• Place the screen exactly an arm's length away (approx. 50-70 cm).
• Adjust the height so the top of the monitor is at or slightly below eye level.
• Tilt the screen back 10-20 degrees to create a comfortable viewing angle.

{{doneWhenLabel}}: Your gaze is directed slightly downward toward the center of the screen at a full arm's distance.

{{whyLabel}}: Standard OS filters are often limited; f.lux provides more granular control based on your specific location and light sources.

{{howLabel}}:

• Download the free software from the official site.
• Enter your location to sync with local sunrise/sunset.
• Set the 'Expanded Settings' to allow for extra warm tones (e.g., 1900K) late at night.

{{doneWhenLabel}}: The software is running in the background and adjusting screen warmth dynamically.

{{whyLabel}}: Glare forces your eyes to squint and adjust constantly, leading to rapid fatigue.

{{howLabel}}:

• Position your desk so windows are to the side, not in front or behind the screen.
• Use a desk lamp with a warm-toned bulb rather than harsh overhead fluorescent lighting.
• If glare persists, consider a generic 'anti-glare matte screen protector'.

{{doneWhenLabel}}: No visible reflections or bright spots are appearing on your screen during peak daylight.

{{whyLabel}}: Constant near-work causes the ciliary muscles in the eye to cramp; looking away allows them to relax.

{{howLabel}}:

• Every 20 minutes, look at an object at least 20 feet (6 meters) away.
• Hold the gaze for at least 20 seconds.
• Use a simple timer app or a browser extension like 'Stretchly' to remind you.
• Build this habit over 21 days for it to become automatic.

{{doneWhenLabel}}: You successfully complete at least 10 '20-20-20' breaks during a standard workday.

{{whyLabel}}: We blink 60% less when looking at screens, leading to dry eyes and blurred vision.

{{howLabel}}:

• Every time you finish a task or send an email, perform 5 slow blinks (close eyes, pause for 2 seconds, open).
• Ensure your eyelids touch completely during each blink to activate tear glands.
• Maintain this focus for 30 days to improve baseline blink rate.

{{doneWhenLabel}}: You no longer feel a 'gritty' or burning sensation in your eyes by the end of the day.

{{whyLabel}}: Even with filters, the brightness of screens can suppress melatonin; total avoidance is the best protection for sleep quality.

{{howLabel}}:

• Set a phone alarm for 60 minutes before your target sleep time.
• Switch to analog activities: reading a physical book, journaling, or light stretching.
• If you must use a screen, this is the only time 'blue light glasses' are truly beneficial.

{{doneWhenLabel}}: Screens are powered down or put away 60 minutes before sleep for 7 consecutive days.

{{whyLabel}}: Uncorrected minor vision issues (like slight astigmatism) are often the root cause of screen-related headaches.

{{howLabel}}:

• Book an appointment with a local optometrist or ophthalmologist.
• Specifically mention your daily screen time and symptoms (e.g., dryness, headaches).
• Ask for a 'computer vision' check, which tests your focus at the specific distance of your monitor.

{{doneWhenLabel}}: Appointment is confirmed in your calendar.

{{whyLabel}}: Scientific consensus (AAO) suggests these glasses don't prevent eye strain, but they can help with sleep if you use screens late at night.

{{howLabel}}:

• Do not buy them for 'eye strain'—use the 20-20-20 rule instead.
• If you work late, choose glasses with a 'clear' or 'amber' tint that specifically block 400-450nm wavelengths.
• Avoid cheap, non-certified versions; look for 'UV400' protection if you also use them near windows.

{{doneWhenLabel}}: You have either purchased a pair for evening use or decided to rely on software filters based on your needs.

{{whyLabel}}: If blinking exercises aren't enough, lubricating drops provide immediate relief for the 'dry eye' component of screen strain.

{{howLabel}}:

• Purchase 'preservative-free' artificial tears (single-use vials or special multi-dose bottles).
• Apply one drop to each eye mid-morning and mid-afternoon, or whenever eyes feel tired.
• Avoid 'redness-relief' drops, as they can cause rebound redness.

{{doneWhenLabel}}: You have a supply of drops at your desk and use them as needed.