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If you are thinking about wearing contact lenses, you are not alone. In fact, about 45 million people in the United States wear contact lenses, according to the Centers for Disease Control and Prevention (CDC). While contact lenses are safe for most users, proper hygiene and regular eye exams are essential to reduce the risk of infection.
Contact lenses are classified as medical devices and are regulated by the U.S. Food and Drug Administration (FDA). This means they must meet strict safety standards and can only be dispensed with a valid prescription from a licensed eye care professional.
When contact lenses are properly fitted and monitored, they are considered safe and effective for most people. However, because they sit directly on the cornea, improper use can increase the risk of irritation, inflammation, or infection.
What Are Contact Lenses and How Do They Work?
Contact lenses are thin, curved lenses that rest directly on the tear film covering the front of your eye, the cornea. They work by bending light so that it focuses correctly on the retina, which is the light-sensitive tissue at the back of your eye responsible for vision.
They are used to treat:
- Myopia (nearsightedness)
- Hyperopia (farsightedness)
- Astigmatism
- Presbyopia
Unlike glasses, contact lenses move with your eyes as you look around. This provides several benefits, including:
- Wider peripheral vision
- Reduced image distortion
- More natural visual alignment
Most contact lenses today are made from hydrogel or silicone hydrogel materials. These materials allow oxygen to pass through to your cornea. Since the cornea lacks its own blood supply, it relies on oxygen from the air to remain healthy and clear.
Rigid gas-permeable (RGP) lenses are made from firm materials that retain their shape on your eye. In some cases, RGP lenses can provide sharper vision than soft contact lenses, especially for certain vision problems.
Who Is a Good Candidate for Contact Lenses?
Many people can wear contact lenses safely, but not everyone is an ideal candidate. In general, you’re more likely to do well with contacts if your prescription is stable and your eyes are healthy.
Your eye doctor will look at several important factors, including:
- The shape and curvature of your cornea
- The quality and stability of your tear film
- The health of your eyelids and ocular surface
- Your personal hygiene habits
- Your ability to follow care and wear instructions
Even small issues, such as poor tear quality or eyelid inflammation, can affect how comfortable contact lenses feel and their long-term safety.
Contact lenses may not be recommended if you have severe dry eye, recurrent corneal infections, ongoing eye inflammation, or difficulty maintaining cleaning routines. In these cases, glasses or other treatment options may be safer.
Before you start wearing contact lenses, you will need a comprehensive contact lens exam. This exam is more detailed than a regular vision check. It gives your eye doctor the chance to evaluate your eye health, talk with you about your daily activities, and decide if contact lenses are a safe and suitable option for you.
What Happens During a Contact Lens Fitting?
Getting fitted for contact lenses takes a few more steps than getting glasses. This helps make sure your lenses fit well and feel comfortable.
Your eye doctor will:
- Measure corneal curvature (keratometry or topography)
- Evaluate tear film quality.
- Assess corneal health with a slit lamp exam.
- Determine lens power and base curve.
- Apply trial lenses to assess fit and rotation.
Your contact lens should move just a little when you blink, but still stay in place. If it moves too much or not enough, you could end up with blurry vision or an irritated eye.
It’s important to see your eye doctor regularly. That way, they can check your cornea and make sure your contact lenses are working well for you.
Types of Contact Lenses: Soft, RGP, Toric, Multifocal & Specialty Options
There is no one-size-fits-all contact lens. The best lens type for you depends on your vision needs, daily activities, and eye health.
- Soft Contact Lenses
Soft contact lenses are the most commonly prescribed type. They are flexible and generally comfortable to wear.
Available as:
- Daily disposable
- Biweekly
- Monthly
Soft contact lenses are a good option for most people who have mild to moderate vision prescriptions.
- Silicone Hydrogel Lenses
Silicone hydrogel lenses are an advanced type of soft lens that lets even more oxygen reach your cornea. This extra oxygen helps keep your eyes healthy and comfortable.
These lenses are often recommended for people who:
- Long daily wear
- Mild dryness
- Higher prescriptions
Allowing more oxygen to reach your cornea lowers the risk of corneal hypoxia. Corneal hypoxia means your cornea is not getting enough oxygen, which can cause discomfort and other eye problems.
- Rigid Gas Permeable (RGP) Lenses
These are firm lenses that maintain their shape on your eye, helping provide clear, stable vision.
Often preferred for:
- High astigmatism
- Irregular corneas
- Keratoconus
- Post-surgical corneas
It may take your eyes several days to a few weeks to fully adjust to wearing RGP lenses.
- Toric Lenses
Toric lenses are specifically designed to correct astigmatism, a common vision problem caused by an irregularly shaped cornea.
Contain:
- Different optical powers in different meridians
- Stabilization mechanisms to prevent rotation
Toric lenses need to be fitted just right for your eyes, so you can see clearly and feel comfortable.
- Multifocal Lenses
Multifocal lenses are used to correct presbyopia, which is the gradual loss of your eyes’ ability to focus on close objects as you age.
Provide:
- Distance correction
- Near correction
- Intermediate correction
Multifocal lenses can help you see clearly at different distances, which means you may not need to rely on reading glasses as much.
- Specialty & Custom Lenses
Custom lenses may be needed for:
- Keratoconus
- Severe dry eye
- Post-corneal surgery
- Irregular astigmatism
If you need custom or specialty lenses, your eye doctor will guide you through the fitting process and teach you how to care for your lenses to achieve the best possible results.
Benefits of Contact Lenses
When properly fitted and worn responsibly, contact lenses can provide:
- Clear, stable vision
- Wider field of view
- Less distortion at the edges of your vision
- No fogging
- Better compatibility with sports
- The freedom to change your appearance without glasses
Many people notice that their vision feels more natural and comfortable with contact lenses compared to glasses.
Risks and Possible Complications
For most people, contact lenses are safe. Most serious problems are not caused by the lenses themselves, but by how they are worn or cared for.
In clinical practice, the most significant risk factors for contact lens complications include overnight wear, poor hygiene, and exposure to water.
Mild issues that can occur include:
- Dryness
- Mild irritation
- Temporary blur
- Increased lens awareness
These symptoms are usually temporary and get better with proper lens care or small changes.
More serious but less common complications include:
- Microbial keratitis (corneal infection)
- Corneal ulcers
- Giant papillary conjunctivitis (GPC)
- Corneal hypoxia
- Acanthamoeba keratitis (often linked to water exposure)
According to the CDC, sleeping in contact lenses increases the risk of eye infection by approximately six to eight times compared to removing them daily. While the overall risk remains relatively low, infections can become serious if treatment is delayed.
The American Academy of Ophthalmology (AAO) specifically advises against overnight wear unless lenses are FDA-approved for that purpose.
Most serious problems can be prevented with good hygiene, replacing your lenses on schedule, and having regular eye exams.
Warning Signs: Remove Lenses Immediately If You Notice
- Increasing eye pain
- Sudden vision changes
- Light sensitivity
- Persistent redness
- Discharge
If you notice any of these warning signs, remove your contact lenses and call your eye doctor right away. Early treatment can reduce the risk of permanent eye damage.
Safe Wear and Daily Care
Since contact lenses rest directly on the surface of your eye, keeping them clean is essential to protect your eye health and prevent infection.
Best practices include:
- Wash and dry your hands thoroughly before handling.
- Use a fresh disinfecting solution every time.
- Replace your contact lenses as often as your eye doctor recommends.
- Replace your contact lens case every three months to reduce the risk of contamination.
- Avoid exposing your contact lenses to water, including tap water, swimming pools, and showers.
- Never “top off” old solution.
Regular eye exams are important for maintaining your eye health and making sure your contact lenses stay safe and comfortable to wear.
Contact Lenses vs Glasses vs Surgery
Each vision correction option has its own advantages. The best choice depends on your needs and preferences.
Glasses may be better if:
- You have severe dry eye.
- You prefer low maintenance.
- You struggle with hygiene.
Surgery (LASIK, PRK) may be considered if:
- Prescription is stable
- Corneal thickness is adequate.
- You desire long-term correction.
Contact lenses offer flexibility, and you can stop wearing them at any time if your needs or preferences change.
How Much Do Contact Lenses Cost Per Year?
The cost of contact lenses varies depending on the lens type, material, and replacement schedule.
In general, estimated annual costs may range:
- Daily disposable lenses: approximately $400–$1,000 per year
- Monthly lenses: approximately $250–$600 per year
- Rigid gas-permeable (RGP) lenses: $300–$800 initially, but they may last one to two years.
Specialty or custom lenses may cost more if your prescription is more complex.
Many people feel that the convenience and visual freedom of contact lenses are worth the extra cost compared to glasses.
Does Insurance Cover Contact Lenses?
Many vision insurance plans cover contact lenses, but the benefits depend on your provider and policy.
Most plans offer:
- An annual contact lens allowance (a set dollar amount)
- Coverage for a contact lens fitting or evaluation exam
- Full or partial coverage for standard lenses
Some lenses, such as toric, multifocal, or specialty designs, may cost more out of pocket. In some cases, like keratoconus or after corneal surgery, lenses may be considered medically necessary and may have more coverage.
Because contact lenses are FDA-regulated medical devices, you need a proper fitting. It is best to check with your insurance provider or ask your eye doctor’s office to confirm your benefits before ordering.
Are Contact Lenses Safe for Children and Teenagers?
Age by itself does not decide if someone can wear contact lenses.
Contact lenses may be appropriate if the child:
- Demonstrates responsibility
- Maintains hygiene
- Has parental supervision
Studies show that children can safely wear contact lenses when they are supervised and follow their eye doctor’s care instructions.
Who Should Avoid Contact Lenses?
Contact lenses work well for many people, but they are not the best choice for everyone.
They may not be recommended if you have:
- Severe or untreated dry eye
- Ongoing corneal inflammation
- Repeated eye infections
- Difficulty following proper cleaning and hygiene routines
If the surface of your eye is unhealthy or your lens care is inconsistent, your risk of irritation or infection increases.
The safest way to know if contact lenses are right for you is to have a full eye exam. Your eye doctor can check your eye health, discuss your daily habits, and help you decide if contact lenses are a safe and practical option.
FAQ
Are contact lenses safe long-term?
For most healthy adults, contact lenses can be worn safely for many years if you take care of them and have regular eye exams.
How long does it take to adjust?
Most people get used to soft contact lenses in a few days. Rigid gas-permeable lenses can take longer, sometimes up to a couple of weeks, before they feel natural.
Can I sleep in contact lenses?
You should only sleep in contact lenses if your doctor says they are approved for overnight wear. Sleeping in lenses not made for overnight use increases your risk of infection.
You should only sleep in contact lenses if your doctor says they are approved for overnight wear. Sleeping in lenses not made for overnight use increases your risk of infection.
Are contact lenses better than glasses?
There is no single option that is best for everyone. Both contact lenses and glasses correct vision well. The best choice depends on your lifestyle, comfort, and the health of your eyes.
There is no single option that is best for everyone. Both contact lenses and glasses correct vision well. The best choice depends on your lifestyle, comfort, and the health of your eyes.
Evidence-Based Contact Lens Safety
Major public health organizations, including the CDC and the American Academy of Ophthalmology, agree that contact lenses are safe when properly prescribed, fitted, and maintained. Most serious complications are linked to misuse rather than the lenses themselves.
Final Thoughts
For most people with healthy eyes, contact lenses are a reliable way to correct vision. They work best when they are prescribed and checked regularly by an eye care professional.
Long-term success with contact lenses depends on how you use them, not just the lens itself. This means:
- Getting a professional fitting
- Practicing consistent, careful hygiene
- Replacing your lenses on schedule
- Keeping up with routine follow-up exams
If you are considering contact lenses, the first step is a comprehensive eye exam. Your eye doctor can check your eye health, discuss your daily routine, and help you choose the safest and most comfortable option for your vision.
