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Microbial infections, vision loss, and how poor hygiene can turn contact lenses from help to hazard.
Contact lenses are convenient but can cause serious health issues if not handled properly.
Contact lenses are a convenient alternative to glasses, offering a wider field of vision and more freedom in daily activities. But behind the ease and aesthetics lies a serious health risk if lenses aren’t handled with care. Corneal infections, some of which can lead to permanent vision loss, are a growing concern, especially among those who wear lenses for extended periods or neglect hygiene routines.
“Contact lenses can disrupt the eye’s natural defenses, particularly the tear film that protects the cornea,” explains Dr. Neeraj Sanduja, Ophthalmologist and Founder of Viaan Eye and Retina Centre. “Improper use or storage creates an environment where harmful microorganisms can thrive,” he adds.
Microbial Keratitis: The Most Dangerous Threat
Among the most serious complications is microbial keratitis, a painful and potentially blinding infection of the cornea. It can be caused by bacteria, fungi, or amoebas such as Pseudomonas aeruginosa and Acanthamoeba, all of which flourish in moist, contaminated environments like old lens cases or tap water.
“Sleeping in contact lenses or extending their wear time significantly reduces oxygen supply to the cornea,” warns Dr. Sanduja. “This makes the eye more vulnerable to infections and microtrauma.”
Hygiene Mistakes That Invite Trouble
Common user errors, like failing to wash hands before handling lenses, topping off old disinfectant instead of using fresh solution, or skipping regular case replacements, can introduce pathogens directly to the eye.
“Lens-related infections often stem from poor hygiene,” says Dr. Sanduja. “Even something as simple as swimming or showering with lenses on can expose the eyes to waterborne microorganisms like Acanthamoeba, which are very difficult to treat.”
Daily Habits Make the Difference
Extended wear lenses or long hours of wear, even during the day, can gradually weaken the corneal surface. Some users also blink less when wearing lenses, leading to dryness that weakens the eye’s natural barriers.
“Microtrauma during insertion or removal and dry eye from reduced blinking further compromise the cornea,” notes Dr. Sanduja. “The best way to stay safe is to follow hygiene protocols strictly, avoid water exposure, and never ignore discomfort.”
What You Can Do to Protect Your Eyes
“Your eyes are too precious to risk. Treat lenses with the same care you would for a surgical instrument, they sit directly on one of the most delicate parts of your body,” Dr. Sanduja advises.
- Always wash and dry your hands before handling lenses.
- Use a fresh disinfecting solution every time.
- Replace lenses and cases as recommended.
- Avoid water exposure, including showers and swimming.
- Never sleep with lenses unless prescribed.
- Schedule regular eye check-ups to catch problems early.
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- Location :
Delhi, India, India
- First Published:
