Inland Eye Care is open by appointment only with precautions remaining in place. Please click here for more information.

alarm-ringing ambulance angle2 archive arrow-down arrow-left arrow-right arrow-up at-sign baby baby2 bag binoculars book-open book2 bookmark2 bubble calendar-check calendar-empty camera2 cart chart-growth check chevron-down chevron-left chevron-right chevron-up circle-minus circle city clapboard-play clipboard-empty clipboard-text clock clock2 cloud-download cloud-windy cloud clubs cog cross crown cube youtube diamond4 diamonds drop-crossed drop2 earth ellipsis envelope-open envelope exclamation eye-dropper eye facebook file-empty fire flag2 flare foursquare gift glasses google graph hammer-wrench heart-pulse heart home instagram joystick lamp layers lifebuoy link linkedin list lock magic-wand map-marker map medal-empty menu microscope minus moon mustache-glasses paper-plane paperclip papers pen pencil pie-chart pinterest plus-circle plus power printer pushpin question rain reading receipt recycle reminder sad shield-check smartphone smile soccer spades speed-medium spotlights star-empty star-half star store sun-glasses sun tag telephone thumbs-down thumbs-up tree tumblr twitter tiktok wechat user users wheelchair write yelp youtube

Sleep and Vision

When we don’t manage to get a full night’s sleep, we feel it long into the next day.

Studies show that sleep deprivation has similar effects on the body and mind as alcohol. But what does sleep have to do with eyesight? You might be surprised. Getting enough sleep does wonders for our overall health, including our eye health, and we can also achieve better quality sleep by changing what our eyes see before bedtime.

How Lack of Sleep Impacts Eye Health

Most of us are familiar with a few of the symptoms of sleep deprivation over a night or two: drowsiness, grumpiness, and difficulty concentrating. In the long term, sleep deprivation can actually weaken our immune systems, make it harder to lose weight, increase our blood pressure, and contribute to memory loss and mood changes. We want to focus on how it affects our eyes.

It takes at least five hours of sleep per night for our eyes to replenish themselves so they can function well throughout the day. It goes beyond simply being able to keep them open. The less sleep we get over time, the more likely we are to experience symptoms like dry eye, eye strain, and even twitchy eyes. Fortunately, our eyes are actually part of the solution to getting more and better sleep.

Blue Light and Our Internal Clocks

Even the most tech-savvy among us can’t change the biology of our eyes. Throughout human history, light from the blue end of the visible spectrum has only come from the sun…until we invented devices with screens. Before that, the absence of blue light from the sun was the signal to our brains that it was time to finish things up for the day and get some sleep.

Now, with blue light coming from screens even after sundown, our brains might not get nature’s bedtime signal when they should. If you’ve noticed that it takes longer to feel tired while using your smart phone late at night, or that you struggle more to fall asleep, that screen could be the culprit because it’s tricking your brain into thinking it needs to stay awake!

Shut Off the Blue Light for Some Shut-Eye

The solution to the blue light problem is simple: put the devices away at least half an hour before going to sleep. Okay, we know that’s not going to be the easiest thing for everyone to do, but that’s why many devices now have built-in Night Shift settings that enable you to turn down the blue light close to bedtime on those evenings when you still need to be online that late. This should help you get more out of your night’s sleep, which will in turn help your eyes do their job better!

Take the Night Off from Wearing Contacts

Wearing contacts overnight might not change the quality of your sleep on the whole, but it will make it less restful for your eyes. The cornea (the clear outer layer of the eye) gets its oxygen directly from the air. At night, when our eyes are closed for hours, contact lenses block much more of the air flow to the corneas than they do during the day.

Even with contacts that are designed for extended wear, it’s still healthier to take them out overnight. In addition to helping your eyes breathe easier, it also reduces the risk of eye infection. No matter what, make sure never to wear contacts for longer stretches of time than the packaging recommends.

Make Eye Exams a Priority

Be sure to bring any questions you still have about how eye health and sleep are related when you come in for your next eye exam! We hope all our patients will get plenty of sleep, practice good care and safety habits with contact lenses, and remember to turn down the blue light before bed.

We look forward to seeing you!

Top image used under CC0 Public Domain license. Image cropped and modified from original.
The content on this blog is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of qualified health providers with questions you may have regarding medical conditions.