How Caffeine Affects Eyesight

If you are like most people in the world, then most likely the first thing you do in the morning is drink a cup of coffee. But, have you ever wondered what the jolt of caffeine is doing to your body? Besides perking you up in the morning and giving you a pick-me-up in the evening, caffeine can have many negative effects on your body.

That’s probably the last thing you want to hear, but it’s true. Caffeine has been linked to numerous diseases and health issues. The most surprising effect that caffeine has on your body is that it can severely harm your eyesight. But is caffeine harmful enough that you should stop drinking your morning cup of Joe?

Basic Info About Caffeine

We’ve all heard it, caffeine is natural. That means that it’s okay to consume, right? Wrong, caffeine might be natural, but so is gasoline if you really want to get down to the nitty gritty, and you wouldn’t consume gasoline.

Caffeine can be found in cocoa beans, coffee beans and even tea. It’s known as a drug that is classified as a stimulant. This means that once introduced into your body, it will stimulate your mind and your body and you give that boost of energy that you long for.

The substance is super effective. Many times, only one cup of strong coffee will wake you up from a dead sleep. However because it’s a drug, it also has some adverse side effects if you take too much of it. The more caffeine you drink, the more anxious you’ll feel, the more jitters you’ll get and you might not even be able to sleep for awhile. Even though, many people still drink their morning coffee or tea every day without a second guess.

Caffeine and Your Eyesight

How Caffeine Affects EyesightOne adverse side effect of caffeine that many people don’t know about is the effect it can have on your eyesight. New research found in The Association for Research in Vision and Ophthalmology suggested that people who consume heavy amounts of caffeine put themselves at a higher risk of losing their vision. The study focused on whether or not caffeine could be linked to the disease exfoliation glaucoma, which is a known cause of blindness.

Researchers found that participants who reported drinking three cups or more of caffeinated coffee per day were at a higher risk of developing exfoliation glaucoma. The results were interesting though in the fact that they linked coffee consumption to exfoliation glaucoma, and ruled out other drinks and foods that were caffeinated. This showed researchers that some compound that is found in coffee, when mixed with caffeine, can cause glaucoma.

So what about other caffeinated drinks? Since the study didn’t find that other caffeinated drinks and foods can be linked to glaucoma and vision loss, then as of now there isn’t a known link. However, other caffeinated beverages and food products still can cause you to be super jittery and hyper. They also can cause heart palpitations, blood sugar drops and anxiety.

Should You Stop Drinking Coffee?

You’re probably wondering if after reading this you should quit drinking coffee each morning. The short answer is no. Even though caffeine is a drug, and it does have some adverse side effects, it isn’t inherently bad for you.

One to two cups of coffee a day should give you the jolt that you need to wake up and keep your energy level stable throughout the day. If you’re an avid coffee drinker and consume multiple pots of the liquid gold per day, then you might want to consider cutting back.

Even though eye issues in relation to caffeine intake are seemingly rare, they do occur, along with many other health issues, so it would be best to cut back. Start slow though because you could suffer from withdrawal symptoms if you stop drinking coffee cold turkey. If you do notice that you experience a change in your vision, then call your doctor.

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23 comments to How Caffeine Affects Eyesight
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  1. Richard J Wendt #

    Thank you, Tyler!
    These are great articles! I’m a Quality Assurance inspector at Boeing Auburn (CMM) and I one of few (at age 65) who doesn’t need glasses or contacts. And (of course) I credit you and your wonderful product. Thanks! And keep those articles coming.

  2. Michael #

    I appreciate this article. I have been a heavy coffee drinker for several years and am trying to cut back. One – two cups a day and then herbal tea. Thank you for the article.

  3. Keith #

    Interesting article. Green tea may be a good alternative.

    • John #

      Green tea a good alternative to coffee? You obviously don’t like coffee very much.

  4. Ben #

    You’re awesome Tyler!
    I drink one Cup O’ Joe a day (and a little afternoon green or black tea) and my vision is still improving thanks to your nutritional guidance! Multiple vision programs speak of how caffeine is always bad, but with my experience and this article, it’s nice to know that my Cup O’ Joe doesn’t hamper vision improvement.

  5. Hamid #

    Thanks for this informative article. I really am a heavy drinker of black tea, also containing a lot of caffeine, like several mugs and tall glasses a day and have already noticed the stree on my eyes quickly after drinking them.
    I have also experienced problems like prostate gland enlargement and hair loss, which are also caused by DHT, and one factor increasing DHT is excessive caffeine intake.
    I have decided to cut down on caffeine intake and drink more water and fruit juice. Thank you again for your post.

    • Nefelos #

      I think i’m experiencing the same side effects from coffee.Irritated eyes,insomnia,anxiety and an itching at the top of my head with increased hair loss.
      I would like to know more about the link between coffee and DHT.Are there any scientific articles about it?

  6. Dariusz #

    How Caffeine Affects Eyesight title. The results were interesting though in the fact that they linked coffee consumption to exfoliation glaucoma, and ruled out other drinks and foods that were caffeinated. This showed researchers that some compound that is found in coffee, when mixed with caffeine, can cause glaucoma – only i see big quackery here? if coffe and not caffeine in other source cause this is highly possible that not caffeine but some chemical reaction cause this.

  7. Sokim #

    I agree with you about caffeine however I just wanted to point out your analogy about gasoline is a fallacy. Gasoline is a processed man made product, no one claims its a natural one. Crude oil on the other hand is natural and wouldn’t be safe to drink. Thought I would pass it on so,you can fix the error. Peace!

  8. smith #

    i drink coffee, not caffeine.

    • Derrick Afflade Rain #

      Nobody drink caffeine directly, if you drink coffee (even if its decaff) then you drinking caffeine cos caffeine can be found in coffee, cocoa beans (milo) and even tea

  9. Conrad #

    I drink a lot of ice tea Mickey D’s Bojangels Hardee’s etc not everyday but two maybe three times monthly plus an occasional Coke and have flashes on my right eye were I’m not seeing to well after having a retna detached few years back and have a swollen one were my doctor had to inject medicine to clear it however I do buy decaff soda and tea and coffee and never experienced this or headaches.

  10. melvin #

    thanks for the info it was very helpful

  11. Anonymous #

    I have Glocoma and the pressure increased and I read a research article about coffee and Glocoma. I was drinking 3 cups a day. I now have stopped because it made sense that something was making the pressure increase. I love coffee but I love my eyesight better.

  12. Peter & Jill Gadalla #

    Yes I have noticed that when I drink 2 small cups of black strong coffee my vision becomes blared.
    I originally put it down to too much computer, and lap top strain.
    But now after reading your article I believe there is a connection.
    Will try in the morning to avoid my coffee and see if I get the same symptoms.

    • Anonymous #

      high intake of coffee,,caffeine can cause vision to become blared

  13. mrv #

    I drink 2 heavy caffe and I had vision issues for about 5 mins
    I couldn’t see everything clear. The visions be drop.

    I have this bad situations two times in a year. So I decide to quite it for ever!

  14. martendelon #

    Well I did not know about caffeine does effect on eyes. I had a really big problem and went so many Eye Dr. no one told me not to drink coffee or was I drinking caffeine ? Now I know I was drinking loose tea 4 cups a day. I hope it will help me , My eyes was so dry and loosing my vision so , it is really bad. Now I can stop hope will help me.
    Thank you for the information very helpful.

  15. Abdella Ali #

    Why doctors are double standard? Can they not criticize drinking coffee based on its ill consequences of health? Is it an issue interest? Coffee is a drug it should not be taken! fool of caffeine, chemicals, etc

  16. Johnnomads #

    My eyes were destroyed by inept eye drs, but 2 sugar free Rockstar’s a day improves my vision

  17. Kennedy Ngolobe #

    thanks for the information. its so educative

  18. Nicole Beauregard #

    I’ve been drinking so much soda with tons of caffine in it , I think I might have an addiction.

  19. Dav2 #

    i started to grow hair on my palms after switching to tea

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