How to spot common contact lens problems

Wearing contact lenses for vision correction can offer some amazing benefits—like clear vision, flexibility with sports and improved self-image—but sometimes, your eyes might tell you that something is wrong. Find out some common problems to keep an eye out for (pun intended) and things your eye doctor might recommend.

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Medically reviewed on September 15, 2025
Published on February 3, 2026
6 minute read

When in doubt, reach out to your eye doctor

First and foremost, if you’re experiencing anything unusual or concerning with your contact lenses, get in touch with your eye doctor. Depending on the issue, time can be of the essence, and your eye doctor is the only one who can diagnose and treat your contact lens problems.

 

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Lens defects

Problems with the lenses themselves

Sometimes the problem isn’t your eye—it's the lens itself. Damage or defects in your contact lenses can cause discomfort, irritation, vision problems, or even eye injuries. Always wash and dry your hands thoroughly and then inspect your lenses carefully before putting them on. If a lens looks damaged, don't use it. 

What to look for:

A close-up of a contact lens resting on an extended finger, with a blue sweater visible in the background
  • Tears, cracks, or warping
  • Cloudy or foggy appearance
  • Discoloration or spots
  • Jagged or rough edges
  • Unusual stiffness or hardness

What to do if you notice defects:

  • Remove the damaged lens immediately if it’s on your eye
  • Discard your lens—don’t try to fix or reuse a cracked or cloudy lens
  • Use a new pair, being sure to check the lenses before putting it on your eye
Eye health issues

Common contact lens related eye problems

Dryness

One of the most common complaints among contact lens wearers is the feeling of eye dryness. There are several reasons you could be experiencing dryness, and one or all could apply to you. Note: If your symptoms are persistent, you may want to be screened for dry eye disease.

Common causes

• Disruption of your natural tear film

Contact lenses may disrupt your natural tear film, which can lead to symptoms of dryness, grittiness, burning and/or redness. Certain contacts can also absorb moisture from your eyes, especially when worn for long periods.

• Environmental factors

Living in a dry climate or having air blowing in your eyes from wind or air conditioning can make your eyes feel dry whether or not you have contact lenses.

• Excessive screen time

Staring at screens for long periods of time is becoming more and more common, and doing so can reduce the amount of times you blink. Blinking is the way your body naturally spreads and replenishes tears, so less blinking can mean more eye dryness.

Symptoms to look out for

  • Feeling of dryness or tightness
  • Gritty or sandy sensation in the eyes
  • Burning or stinging feeling
  • Redness
  • Sensitivity to light
  • Tearing or watering as the eyes try to compensate for dryness

Possible treatment

Your eye doctor may recommend lubricating eye drops compatible with contact lenses, and/or potentially a different kind of lens better suited to for your specific needs.

 

Blurry vision

A woman with red hair holding glasses in her hand squinting as she looks into the distance

Blurred vision is another problem that can crop up unexpectedly during contact lens wear. Often, it’s caused by your lens drying out or your tears not forming a smooth surface over the lens. Other times, it may be caused by buildup on the surface of your lenses, misfitting lenses, or an outdated prescription. Since the causes vary, contact your eye doctor if you experience persistent blurry vision.

What to look for

  • Vision that is fuzzy, hazy, or fluctuates
  • Difficulty focusing or reading
  • Vision that worsens over time or after lens insertion
  • Seeing halos or starbursts around lights

Prevention tip

Regular eye exams help ensure your vision correction stays clear and that your lenses are performing as they’re supposed to. If you’re experiencing blurry vision regularly with contact lenses, contact your eye doctor.

Irritation

A woman touching her eye while exercising outside on a running trail

Eye irritation while wearing contact lenses can be caused by a variety of factors, including allergies, exposure to pollutants like dust or smoke, or over-wearing your lenses. Remember, persistent irritation should always prompt you to reach out to your eye doctor. 

What to look for

  • Bright red or bloodshot eyes
  • Itching or burning sensations
  • Sensitivity to light
  • Mild swelling around the eyes
  • Watery or teary eyes

Something to remember

Redness and irritation can be a sign of keratitis (an inflammation of the cornea). If you’re experiencing concerning or ongoing symptoms, reach out to your eye doctor.

Eye infection

A blue and white illustration of an eye with a tear

Infections are among the most serious contact lens problems. They can be caused by bacteria, fungi, viruses, or protozoa, often entering the eye through poor hygiene, water exposure, or wearing lenses longer than recommended.

What to look for

  • Excessive tearing or discharge (pus or mucus)
  • Eye pain or discomfort
  • Severe light sensitivity
  • Blurred vision that doesn’t improve
  • Swelling of the eyelids
  • Feeling of something foreign in the eye

What to do

If you experience any symptoms of infection, it’s critical to stop wearing your contacts and see your eye care professional without delay. If left untreated, infections can cause severe damage to your eyes, even leading to vision loss.

Scratched cornea

This may be a small abrasion or scrape on the surface of the eye (the cornea), which can happen if your lens isn’t fitted properly, if you handle it carelessly, or if debris gets trapped under the lens. Corneal scratches often cause discomfort, a gritty feeling, tearing, light sensitivity, and blurred vision. If not treated as soon as possible, these tiny scratches can become infected or develop into more serious corneal ulcers.

What to look for

  • High level of pain
  • Feeling like you have an eyelash in your eye
  • Redness
  • Tearing or watering
  • Intense sensitivity to light
  • Blurred or distorted vision

Prevention tip

Always handle your lenses carefully, make sure they fit well, and never wear damaged or scratched lenses. If you feel persistent discomfort or notice a scratch, visit your eye doctor immediately to prevent complications.

What’s next?

Questions? Contact your eye doctor.

Any time you’re experiencing concerning or ongoing symptoms with your contact lenses, it’s important to reach out to your doctor for diagnosis and treatment.

Questions about your contact lenses? We’re here to assist.

Connect with a contact lens specialist, watch helpful how-to videos, browse FAQs, and more.

FAQs

Frequently asked questions

How do I know if my contact lenses are causing problems?

Signs like discomfort, blurred vision, redness, or unusual discharge are clues. Always pay attention to how your eyes feel—if something doesn’t seem right, it’s time to check with your eye doctor.

What should I do if I experience blurry or fuzzy vision?

Remove your lenses and inspect them carefully. If they’re damaged or dirty, replace them. For daily disposable, always use a new lens. For reusable lenses, if blurry vision persists even after cleaning, dispose of the lens. If blurriness continues with new lens, remove the lens and contact your eye doctor. 

Is it normal to feel dryness or irritation?

Mild dryness can happen occasionally, especially in dry environments. However, if dryness, redness, or irritation become persistent, it’s a sign that your eyes might need attention. Don’t ignore ongoing discomfort—talk to your eye doctor.

Can water cause contact lens problems?

Yes, water can contain harmful microbes that can cause infections. Always remove your lenses before swimming, showering, or using water in any activity involving water to help keep your eyes safe.

How often should I replace my lenses or lens case?

Follow your eye care professional’s advice, but generally, lenses are replaced according to your prescribed schedule—daily, bi-weekly, or monthly. Lens cases should be replaced every one to three months to prevent bacteria buildup.

What if I notice something unusual with my lenses?

Stop wearing them immediately and contact your eye doctor. Do not try to fix or reuse damaged lenses, as this can lead to further problems.

Are all contact lens problems preventable?

Most issues can be avoided with proper hygiene, routine eye exams, and following your doctor’s advice on lens wear and care routines. Good habits go a long way in helping keep your eyes healthy.

Are there long-term contact lens wear problems

If you don’t care for your contacts correctly, or don’t throw them away on time, you have more of a chance of developing any of the contact lens issues listed above, plus other potential issues like corneal hypoxia or giant papillary conjunctivitis.

Related content

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Cleaning and storing soft contact lenses—what to know

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Why does my vision get blurry while wearing contact lenses?

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