Do Your Eyes Pull Secret All-Nighters Even When You Are Fast Asleep

Most ordinary people never notice that their eyes are running tiny hidden operations around the clock, and these unnoticed processes directly decide their long term vision comfort and health.

You may think your eyes take a full break the second you tuck yourself into bed and drift off to dreamland, but that is far from the full story. During the rapid eye movement phase of your sleep cycle, your eyeballs roll rapidly behind closed eyelids exactly as they are tracking moving scenes when you are awake, which is directly linked to the vivid dreams you experience at that moment. What is more, your eye tissues never stop their metabolic work through the whole night: old dead cells are cleared away, tiny nutrient supplies are transported to the cornea that has no direct blood vessels of its own, and the tiny amount of leftover foreign matter that got into your eye during the day is wrapped up and turned into the small eye discharge you see at the corner of your eye when you wake up in the morning. If you fall asleep with contact lenses still on, you will cut off the oxygen supply channel for your cornea for 6 to 8 continuous hours, and that is exactly why you feel a sharp stinging sensation when you open your eyes the next morning even if you slept for a full 9 hours.

A huge number of people have misunderstood the classic 20-20-20 eye protection rule for years, and that is why their eye fatigue never gets relieved no matter how often they follow the rule on paper. The rule tells you to look at an object 20 feet away for 20 seconds every 20 minutes after using digital screens, but most people end up looking at moving targets such as flying birds, swaying tree branches or distant passing cars, which keeps their eye muscles adjusted constantly and never gets a full rest. The correct way to follow this rule is to pick a totally stationary object in the far distance, no matter it is a street sign, a roof top antenna or a distant billboard that you can make out clearly, and hold your gaze on it without moving your eyeballs as much as possible for the full 20 seconds. You will be surprised to find that the tight, heavy feeling around your eyes melts away far faster than you expected.

You probably have had that awkward moment when you walk out of a hot spicy hot pot restaurant with red, watery eyes, and you blame all the discomfort on the spicy chili fumes rising from the boiling pot, but the real trigger is usually the eye strain you accumulated long before you stepped into the restaurant. When you scroll through social media feeds while waiting for your table, your blink rate drops from the normal 12 to 15 times per minute to less than 5 times per minute, which breaks the smooth tear film covering the surface of your eye and leaves tiny invisible dry patches. The mild chili fumes just act as a light irritant that sends an emergency signal to your tear gland, making it pump out a huge amount of tears to repair the damaged surface in a very short time. This is also the exact reason why your eyes water a lot when you walk outside on a cold windy day after hours of non-stop screen work.

The huge wave of popular wash liquid products that went viral on social media a few years ago misled a large group of people to damage their natural eye self-cleaning system. Your eyes are born with a set of perfectly tuned cleaning and disinfection mechanism: every time you blink, it acts like a soft windshield wiper that spreads tear liquid evenly across the eye surface, and the lysozyme contained in natural tears can kill most common bacteria that accidentally get into your eye, without any extra artificial additive added to it. If you use commercial eye wash liquid too often on a daily basis, you will wash away the beneficial protective layer on your eye surface, break the natural microbial balance, and end up with even drier and more sensitive eyes that get irritated far easier.

You do not need to spend hundreds or thousands of dollars on fancy eye care devices or expensive nutritional supplements to keep your eyes in good condition, most of the useful adjustment tricks are extremely easy to fit into your daily routine. Place a small open cup of clean water next to your work desk to add a tiny amount of moisture to the dry air around your face, put a small potted plant on the edge of your window to give you a close stationary target to glance at when you do not want to turn your head too far, and remember to squeeze your eyes fully shut for 2 seconds every time before you finish a work task, which helps your tear liquid cover every corner of your eye surface fully. These tiny unnoticeable habits pile up over months and years, and they will save you from a lot of unnecessary eye discomfort that troubles most people around you.