10 Everyday Habits That Could Be Harming Your Eyes

Are You Unknowingly Harming Your Most Precious Sense?

We remember to protect our skin from the sun and our bodies with a healthy diet, but what about our eyes? In our busy daily lives, we often adopt small, seemingly harmless habits that can slowly but surely damage our vision. Eye health is not just about genetics or major injuries; it is the cumulative effect of our everyday actions. Many common habits contribute to eye strain, dryness, and an increased risk of serious long-term conditions. These are issues that can often be detected early with a regular eye exam. This guide will shine a light on 10 of the most common everyday habits that could be harming your eyes. More importantly, it will provide the simple, practical fixes you can implement today to protect your vision for a lifetime.

Habit #1: The Endless Scroll – Excessive Screen Time

In our digital world, staring at screens is a fact of life. However, prolonged use of phones, computers, and tablets can lead to a condition known as “Digital Eye Strain.” When we focus on a screen, our blink rate can drop by as much as half. Blinking is essential for spreading tears and keeping the eye’s surface lubricated, so less blinking leads to dry, irritated, and tired eyes. The constant focusing effort required can also lead to headaches and blurred vision.

The best way to combat digital eye strain is to follow the 20-20-20 Rule. Every 20 minutes, look away from your screen at something at least 20 feet away for a minimum of 20 seconds. This allows your eye muscles to relax and reset. It is also beneficial to adjust your screen’s brightness to match the ambient light in the room and to position your monitor slightly below eye level to reduce strain.

Habit #2: Sleeping in Your Contact Lenses

This is one of the most significant and avoidable risks for contact lens wearers. Sleeping in your contacts, even for a short nap, dramatically reduces the oxygen supply to your cornea. The cornea gets its oxygen directly from the air, and a contact lens acts as a barrier. When your eyelid is closed over it, the oxygen supply is severely limited, creating a perfect breeding ground for dangerous bacteria.

This habit dramatically increases the risk of serious eye infections like microbial keratitis, which can lead to painful corneal ulcers, permanent scarring, and even vision loss. The simple fix is to make removing your contact lenses a non-negotiable part of your nightly routine. If you do accidentally fall asleep in them, remove them as soon as you wake up and give your eyes a full day to breathe by wearing your glasses.

Habit #3: Forgetting Your Sunglasses

Sunglasses are essential protective equipment for your eyes. Just like your skin, your eyes can be damaged by the sun’s harmful ultraviolet (UV) radiation. Prolonged exposure can cause a painful “sunburn” on your corneas (photokeratitis) and is a major contributing factor to the development of serious, age-related eye conditions like cataracts and macular degeneration, which are leading causes of blindness in Canada.

The solution is simple: wear sunglasses that offer 100% UVA and UVB protection. Make it a habit to wear them anytime you are outdoors during the day, even on cloudy days, as up to 80% of the sun’s UV rays can penetrate cloud cover. A wide-brimmed hat provides an excellent additional layer of protection. Think of sunglasses as sunscreen for your eyes—an essential tool for preserving your long-term vision.

Habit #4: Aggressively Rubbing Your Eyes

While it might feel good in the moment, frequent and aggressive eye rubbing can be surprisingly harmful. The skin around your eyes is incredibly thin and delicate. Rubbing can break the tiny blood vessels just beneath the surface, leading to redness and dark circles. More seriously, the physical pressure can put stress on the cornea, potentially weakening the tissue over many years and leading to a condition called keratoconus, which causes significant vision distortion. A much safer way to relieve itchy or irritated eyes is to use a clean, cold compress or preservative-free artificial tears.

Habit #5: Using Old or Expired Eye Makeup

Liquid and cream-based eye makeup, especially mascara and liquid eyeliner, are ideal environments for bacteria to grow. Every time you use a mascara wand, you introduce bacteria from your eyelashes into the tube. Using products past their expiration date dramatically increases the risk of introducing these bacteria into your eye, which can lead to painful infections like pink eye (conjunctivitis) or styes. To protect your eyes, get into the habit of replacing your mascara and liquid eyeliners every three months without fail. It is also crucial to never share eye makeup and to discard any products used during an eye infection.

Habit #6: Not Staying Properly Hydrated

Proper hydration is essential for your entire body, and your eyes are no exception. Your body needs an adequate supply of water to produce a healthy volume of tears, which lubricate the surface of your eyes and wash away debris. When you are dehydrated, tear production can decrease significantly. This lack of lubrication can lead to the symptoms of dry eye syndrome, including a gritty feeling, stinging, burning, and even episodes of blurred vision. The simple fix is to drink plenty of water throughout the day. Do not wait until you feel thirsty, as that is an early sign that your body is already dehydrated.

Habit #7: Smoking Cigarettes

Smoking is devastating for your overall health and is particularly harmful to your eyes. Research has conclusively linked smoking to a dramatically increased risk of developing serious, sight-threatening conditions like cataracts and age-related macular degeneration (AMD). The toxic chemicals in cigarette smoke damage the delicate blood vessels in the eyes, reducing blood flow and the supply of essential nutrients to the retina and lens. The smoke itself is also a major external irritant that can worsen the symptoms of chronic dry eye. The only effective solution is to quit smoking.

Habit #8: Skipping Your Regular Eye Exam

Many of the most serious and sight-threatening eye diseases, such as glaucoma, diabetic retinopathy, and the early stages of macular degeneration, have no noticeable symptoms. They can develop silently for years, slowly causing irreversible damage. By the time you notice a change in your eyesight, significant damage may have already occurred. This is why a regular, comprehensive eye exam is so critical. During an exam, an eye doctor does much more than just check your prescription; they examine the health of your entire eye and can detect these silent diseases in their earliest, most treatable stages.

Habit #9: Forgoing Safety Eyewear

Many common household activities can pose a serious and sudden risk to your eyes. Mowing the lawn, using a string trimmer, or working with power tools can send debris flying at high speed. Even simple tasks like cleaning with harsh chemical sprays can lead to a potentially blinding eye injury. The solution is simple and effective: invest in a comfortable, well-fitting pair of ANSI-rated safety glasses. Make it a strict rule to wear them during any activity that could pose a risk to your eyes. This simple habit is the most effective way to prevent a traumatic and often life-altering injury.

Habit #10: Misusing Eye Drops

When your eyes are red, it is tempting to reach for “redness-reducing” eye drops. While these provide temporary cosmetic relief by constricting blood vessels, overusing them can be harmful. When the drops wear off, the blood vessels can dilate even more than before, a phenomenon known as “rebound redness,” creating a cycle of dependency. It is also important to use the right type of drop for your issue. Redness-reducing drops do not lubricate and can make dry eyes worse. If you have persistent redness or dryness, see an eye doctor to diagnose the underlying cause.

A Clearer Outlook on Eye Health

Protecting your vision is a daily practice, not a one-time event. Small, conscious changes to your everyday habits can have a massive and positive impact on your long-term eye health. These fixes are not a list of restrictions; they are empowering actions that give you control over the health of your most precious sense. Your eyesight is irreplaceable. Start today by choosing one or two of these habits to change. By being mindful of these everyday risks and making smarter choices, you can take a proactive role in ensuring a lifetime of clear, healthy vision.