Each spring, clocks move forward one hour for Daylight Saving Time (DST). While many people enjoy the longer daylight hours in the evening, the time change also means losing an hour of sleep. Although it may seem like a small adjustment, this shift can disrupt your body’s internal clock and impact both your sleep and your eye health.

If you’ve noticed your eyes feeling tired, dry, or irritated after the time change, you’re not alone. Changes in sleep patterns can lead to eye fatigue, difficulty focusing, and increased sensitivity to light. Understanding how Daylight Saving Time affects your vision can help you take steps to protect your eye health.

Disrupted Sleep Can Lead to Eye Strain and Fatigue

Your eyes rely on proper rest to function at their best. When the body’s natural sleep cycle is disrupted, it can affect how your eyes perform throughout the day. Losing even one hour of sleep can contribute to:

• Tired or strained eyes – Sleep loss can cause the eye muscles to fatigue more quickly, making reading, driving, or working on a computer more difficult.
• Blurred vision – Poor sleep may reduce tear production, leading to dryness and fluctuating vision.
• Increased light sensitivity – When your eyes are tired, they may become more sensitive to bright sunlight or digital screens.

Sleep Changes Can Worsen Dry Eye Symptoms

For people who already struggle with dry eye, the time change can make symptoms more noticeable. Lack of sleep can reduce tear production, causing the eyes to feel gritty, red, or irritated.

You may be more likely to experience dry eye symptoms if you:

• Spend long hours looking at digital screens
• Wear contact lenses regularly
• Have a history of dry eye disease

Staying hydrated and giving your eyes regular breaks can help reduce discomfort during this adjustment period.

Blue Light at Night Can Disrupt Sleep and Eye Comfort

After the time change, many people find it harder to fall asleep. It’s common to turn to phones, tablets, or television before bed, but these screens emit blue light that can interfere with your sleep cycle.

Blue light exposure at night can:

• Reduce melatonin production, making it harder to fall asleep
• Disrupt your circadian rhythm, leading to restless sleep
• Increase digital eye strain, which may cause headaches, blurred vision, or dry eyes

Limiting screen use before bedtime can help your body adjust more easily.

Poor Sleep May Increase the Risk of Eye Health Issues

Ongoing sleep disruption can affect more than just how your eyes feel. Research suggests that poor sleep may be linked to certain eye health concerns, including:

• Glaucoma, where sleep disruption may affect eye pressure
• Retinal health issues, as the eyes may receive less oxygen during periods of poor rest
• Migraines and light sensitivity, which can include visual disturbances

While a single time change usually doesn’t cause serious problems, it can temporarily aggravate existing eye conditions.

Tips to Protect Your Eyes During the Time Change

Fortunately, there are several simple steps you can take to help your body—and your eyes—adjust to Daylight Saving Time:

• Adjust your bedtime gradually by going to sleep 15–30 minutes earlier a few days before the time change.
• Limit screen time before bed, or consider blue-light filtering glasses if you use devices at night.
• Follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for at least 20 seconds.
• Stay hydrated and use lubricating eye drops if your eyes feel dry.
• Wear sunglasses outdoors to reduce glare and protect your eyes from UV rays.
• Create a sleep-friendly bedroom by keeping the room cool, dark, and quiet.

When to Schedule an Eye Exam

Daylight Saving Time may only shift the clock by an hour, but its effects on sleep and eye comfort can linger for days. Practicing healthy sleep habits and good eye care can help minimize eye strain, dryness, and fatigue during the transition.

If you experience ongoing vision problems, persistent eye discomfort, or worsening dryness, it may be time for an eye exam. The doctors at Bissell Eye Care can evaluate your symptoms and recommend treatments or solutions to help keep your eyes comfortable and your vision clear.

About Bissell Eye Care: John D. Bissell, OD, is the owner of Bissell Eye Care, proudly serving the Northern Pittsburgh and Alle-Kiski Valley regions. Dr. Bissell has received advanced training through the International Academy of Low Vision Specialists, enabling him to help patients living with vision impairment and low vision challenges. With two convenient office locations and evening appointments available, Bissell Eye Care offers comprehensive eye exams for the entire family—starting as young as six months. Our services include ocular disease detection and treatment, prescription eyeglasses and sunglasses, specialty activewear eyewear, contact lenses, and dedicated low vision evaluations for those with significant vision impairment and vision loss. We accept most vision and health insurance plans. To learn more, visit bisselleyecare.com or call our Bakerstown office at 724-443-6767 or our Natrona Heights office at 724-226-0444.