How clearly can you see this sentence? If it’s the end of the day and you’ve already spent a lot of time on screens, chances are it will be harder to read then if you’re reading this first thing in the morning. Eyes get tired like the rest of you and it can affect how well you see.There are other contributors to temporary vision changes, some more serious than others. If you’ve ever wondered why there are days when you can see the fine print on the back of your cereal box and others when you can’t— this is the post for you.
Here are some causes of fluctuating vision, what you can do to avoid it and when it may be a cause for concern.
Why does my eyesight change from day to day?
This can be a normal temporary reaction to some common causes or the result of a more serious underlying condition.
Common causes that are usually temporary include:
Eye Strain
After a good workout on the treadmill you likely hit the couch or take a break. Eye muscles also need rest. The problem is these muscles need to work a little harder when reading or working off a screen then they do when reading a book or newspaper. More time on screens can lead to digital eye strain and eyes tend to blur or lose focus as a result of being tired. This condition is likely temporary and a sign you should take a break. Follow the 20-20-20 rule (look 20 feet away every 20 minutes for 20 seconds) while you work, or take a break completely and go for a quick walk in nature. It will help you focus in more ways than one.
Dry Eye
Dry eye is a condition that affects tear production in the eyes. It can make the eyes feel gritty and tired and lead to blurry vision. There are many causes for dry eye which include: allergies, contributing health conditions such as diabetes, certain medications and screen time. Your eye doctor can help you find the cause for your dry eye and the solution that works best such as OTC drops or changing medications.
Sleep Deprivation
One too many coffees before bed may affect your sleep and your eyesight. Lack of sleep affects the eyes because it impacts the brain and the eyes. Both are needed for clear vision. It may also diminish tear production leading to dry eyes, itchy eyes, blurry vision and a change in visual acuity. Try to get your zzz’s by setting up a nightly routine and avoid Tim’s runs after 4 pm so your body has a chance to metabolize the caffeine before bed.
Medications
Certain medications such as antihistamines, blood pressure medication, hormones and antidepressants can affect your eyesight. Be sure to let your eye doctor know of any vision changes and any medication you are taking if your vision is affected.
Pregnancy
Fluctuating hormones can cause a change in the cornea’s shape resulting in blurred vision during pregnancy. Hormone replacement therapy or other hormonal changes may also impact how you see.
Migraines
Migraine headaches can cause temporary light sensitivity, blurry vision and other visual disturbances.
Should I worry about fluctuating vision?
Though temporary changes in eyesight are normal due to the factors mentioned above or fatigue, there are times when vision changes are a cause for concern. Serious medical conditions can contribute to fluctuating vision and damage the blood vessels in the retina leading to permanent vision.
These include:
Diabetes
Sugar definitely isn’t sweet when it comes to your eyesight. When blood sugar is high water is pulled into the eye’s lens, causing it to expand and making everything look blurry. Be sure to have your eyes and your blood sugar tested if you suspect it’s contributing to changes in your eyesight. If you are diabetic always notify your doctor of vision changes as diabetic retinopathy is a serious complication.
High Blood Pressure
If you are being treated for high blood pressure and experience fluctuations in your eyesight you should seek medical attention as it can cause permanent vision loss and can also be a warning for a stroke.
Glaucoma
Glaucoma affects the pressure in your eyes and can cause vision changes. Damage may be permanent. In the early stages most patients are unaware they have the disease which is why routine eye exams are so important.
May today be a 20/20 day!
All of us experience temporary changes in our eyesight from time to time. If those changes happen regularly or you’re not sure what is causing them be sure to book an appointment to make sure there aren’t any underlying causes that can lead to permanent vision loss. Take care of your eyes, give them a break when needed and hopefully you’ll experience more 20/20 days ahead.
