Do you know how many times you blink in a day and why?

Blinking is essential for the health of your eyes. It keeps your eyes moist and oxygenated, and also removes debris from your eyes. Not everyone blinks at the same rate, but there is an average rate for how many times most people blink in a minute, hour or day. Here’s the average number of times you’re likely to blink in a day, and what can interfere with your blink rate.

How many times do you blink in a day ?

On average, most people blink approximately 15 to 66 times per minute. This means that when you are awake, you probably blink:

900 to 1 200 times per hour

14 400 at 19 200 times a day

100 800 at 134 400 times per week

between 5.2 and 7.1 million times per year.

Each blink lasts between 0.1 and 0.4 seconds. If you consider the number of times an average person blinks per minute, that’s about % of the time you are awake. Research suggests that there is no significant difference in blink frequency based on gender or age.

Why do you blink?

Blinking is essential for the health of your eyes. It plays a key role in:

– removing debris from your eyes, such as small air particles, dried tears and dead cells

– providing your eyes with nutrients and other substances that help them stay healthy

– wetting your eyes, which which prevents dry eyes and reduces the risk of tear film problems

– bringing oxygen to your eyes.

All of these functions also help to prevent eye infections. Also, blinking gives your brain a brief rest, which helps you focus on what you’re doing.

What can be going on if you don’t blink?

If you don’t blink, or if you don’t blink often enough:

– The cornea may swell.

The cornea has no blood vessels, so it needs oxygen from the tear film, which it receives when you blink. If you blink less often, your cornea should continue to get the oxygen it needs. But if you don’t blink, the lack of oxygen can cause your cornea to swell. In fact, your cornea even swells a little when you sleep, but returns to normal soon after you wake up.

– Your eyes aren’t getting the nutrients they need to stay healthy.

– Your eyes may dry out because your tear film is not being replenished. This can lead to eye pain and blurred vision.

– The risk of eye infection increases due to debris remaining in the eye and lack of oxygen in the eye.

Why do you blink less often?

Computer vision syndrome is a common reason why you blink less. This can happen when you use a computer for a long time without taking a break. In fact, research shows you blink 20% less when using a computer. If you experience dry eyes while using a computer, it may be because you blink less often.

To help combat computer vision syndrome, try:

– to take frequent breaks and to apply the rule of 20-20-20 : all the 66 minutes, look away from your computer and rest your eyes on something to 20 meters away for 20 seconds

– to remind you to blink when you are in front of your computer

– use eye drops

– adjust lighting or screen position to reduce glare, or use an anti-glare filter -reflections on your screen

by adjusting the brightness and contrast of your screen so that you don’t have to strain your eyes to read

– limit the time you spend in front of a screen computer ran, especially near bedtime, when lighting may be poorer and you may be more tired.

You may also blink less frequently by due to eyelid problems. Eyelid problems can be caused by:

– paralysis

– injury

– eye disease

– side effects of surgery.

Some people with Parkinson’s disease may also blink less often, due to problems with their muscle movements.

Why do you blink more often?

Blinking your eyes more frequently can be embarrassing, but it’s rarely a sign of a serious problem.

Here are some possible causes for your eyes blinking more frequently. eyes:

– eye irritation, due to irritants in the air, dry eyes, scratching of the cornea, inflammation of the eyelid or iris , an object in the eye or other reasons

– eyestrain due to concentrating on the same thing for too long, for example after a see your computer turned off at the end of the day

– vision problems, such as nearsightedness, farsightedness, or misalignment of the eyes

– a disorder movement, which can cause eye spasms

– anxiety or stress

– fatigue

– a habit

In rare cases, frequent eye blinking may be a sign of a more serious condition. Conditions that may cause frequent eye blinking include:

– seizure disorders (especially in children)

– multiple sclerosis

– Wilson’s disease

– Tourette’s syndrome.

Symptoms to watch out for

Most of the time, a change in blink rate is nothing to worry about. However, if the blinking frequency is accompanied by other symptoms, it may be due to something more serious.

Be aware of the following:

signs of an eye infection:






light sensitivity



sensation of having something in the eye

blurred vision

change in blink rate after recent eye injury

balance or coordination problems

other muscle spasms

physical and vocal tics (in children)

In summary

On average, most people blink 15 to 20 times per minute. This helps keep your eyes healthy by keeping them oxygenated and moist, and clearing away debris. Although certain conditions can cause you to blink more or less frequently, a change in your blink pattern is rarely a sign of a serious problem. If you notice changes in the way you blink and signs of eye infection, neurological symptoms, or recent eye injury, talk to your doctor. In this case, it may be a sign of a more serious condition.

Presse Santé strives to transmit health knowledge in a language accessible to all. In NO CASE, the information given can not replace the advice of a health professional.

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