Caffeine is present in many of the foods and beverages we consume, whether it be in the form of tea, chocolate, a can of Coke, or energy drinks.

It has several health advantages, including a reduced risk of Type 2 Diabetes, protection from Alzheimer’s disease and dementia, and even the ability to aid in fat burning.

But do we drink too much coffee, and what negative effects might it have on our health? Lenstore has examined the immediate and long-term effects of caffeine overdose, including headaches, sleeplessness, and blurred vision.

Caffeine intake for an adult should not exceed 400 milligrammes (mg) per day, which is equal to around four cups of coffee. We created Steve to depict what we might look like and the symptoms we can feel if we don’t cut back on our caffeine consumption.

Can Caffeine Cause Vision Problems

• Eyes and high blood pressure

Numerous eye issues, including retinopathy (where your retina becomes damaged and can cause blurred vision, bleeding in the eye, and even total blindness), can be brought on by high blood pressure damaging the tiny blood vessels that feed blood to the eyes.

In addition to damaging your nerves, high blood pressure can also result in choroidopathy, a fluid accumulation in the retina that can potentially harm your vision.

Studies have also found a link between daily coffee use of significant amounts and glaucoma risk (this is thought to be a problem for people with a genetic predisposition to greater ocular pressure).

Numerous signs of glaucoma can include inflamed eyes, ocular pain, seeing circles around lights, blurred vision, and, if untreated, blindness.

• Anxiety

It should come as no surprise that almost half of us (49%) say we can’t begin the day without a cup of tea or coffee, but nearly one in five of us (18%) say caffeine makes us anxious.

The ‘fight or flight’ hormone adrenaline, which is linked to enhanced energy, is released when caffeine is consumed.

These effects are amplified in cases of caffeine overdose and can make us feel tense, agitated, and jittery. Stress levels have been observed to rise with both increased and low doses.

In addition to keeping us awake, caffeine can also make it challenging to get a good night’s sleep, with a third (33%) of people reporting that coffee makes it hard for them to fall asleep at night.

Insomnia

Caffeine can persist in your system for up to nine hours, so it’s vital to be mindful of when you consume it to avoid having an adverse effect on your ability to sleep or recuperate.

When you have dry eyes as a sign of insomnia, it’s crucial to moisten them with eye drops and, if you can, avoid using contact lenses until the condition goes away.

Headaches

Intriguingly, more than one in five of our respondents (22%) said that caffeine gives them a headache, while more than two fifths (43%) reported that it doesn’t.

Since caffeine is a component of over-the-counter painkillers, it can actually help reduce inflammation, which assists in relieving pain.

Unfortunately, the same thing that makes caffeine so effective at treating headaches can also make them worse. When you quit taking coffee, the blood vessels around your brain reopen and your pain returns because caffeine constricts those blood vessels.

People frequently report headaches as a sign of coffee withdrawal.

Unsteadiness or faintness

Caffeine, like other stimulants like cigarettes, decreases blood flow to the brain, which could cause you to feel dizzy or woozy if you drink too much coffee.

Movement tremors of Caffeine

Caffeine is a stimulant, therefore consuming too much of it can make your muscles twitch or spasm. This can result in anything from shaky hands to twitching eyes.

Although this is frequently just a passing sensation, it may indicate that you need to cut back on your coffee use.

Elevated blood pressure

While overall, caffeine does not seem to increase your risk of heart disease, numerous studies have shown that it does elevate blood pressure. More over a quarter (26%) of our respondents said that caffeine makes them feel more energised.

Therefore, if you already have high blood pressure, you should carefully watch your caffeine intake because high levels can increase your chance of having a heart attack or stroke.

Conclusion

Coffee use raises blood pressure, which might cause problems with your eyesight. There is a link between glaucoma and coffee use in people with a higher hereditary risk for the condition, so you should be very careful with your caffeine intake if you have a family history of the disease.

You may make wise judgements regarding your health when you’re aware of the relationship between coffee and vision.