If you’ve been wearing contact lenses for a while but haven’t followed the recommended replacement schedules, or if you’re new to lenses and want to learn the best practices for replacement – this blog is for you.
Let’s start with the absolute basics.
What are contact lenses?
Contact lenses are small, curved medical devices designed to correct vision by sitting directly on the eye’s surface. They can be made from hard or soft materials and provide a comfortable alternative to glasses.
The most helpful benefit as opposed to glasses is that these lenses:
- provide a wider field of vision
- allow a better peripheral view without the interference of frames
- extend suitability for active lifestyles or sports
- are great for all weather conditions, dodging fogging or moisture accumulation
- provide natural vision without magnifying or warping the wearer’s appearance
With these benefits comes some necessary caution. Understanding how often you should replace your contact lenses is important to keep your eyes healthy and prevent complications.
We’ll explain the different types of contact lenses, their replacement schedules, and how proper care can help you enjoy the advantages of clear vision while keeping the risks to a minimum.
Types of Contact Lenses and Their Characteristics
- Hard Contact Lenses
Hard contact lenses, also called rigid gas permeable (RGP) lenses, are made from firm materials that hold their shape while allowing oxygen to pass through to the cornea.
These lenses are especially effective for those with astigmatism because they extend sharper vision compared to other options. They are also durable and resistant to deposits, making them a long-lasting choice.
- Soft Contact Lenses
These are made of flexible plastics that absorb water, so they’re quite comfortable to wear. These lenses are available in two main categories:
- Hydrogel Lenses: The traditional soft lens material is designed to hold water content for a comfortable fit.
- Silicone Hydrogel Lenses: This is a newer option that uses silicone to improve oxygen flow to the eye and reduce the risk of dryness and irritation.
Replacement Schedules for Contact Lenses
Contact lenses have different replacement timelines specific to their design and material. You must follow the recommended schedule to avoid problems such as infections, irritation, or vision problems.
- Daily Disposable
Daily disposable lenses are meant for single-day use and should be discarded after each wear. They are suitable for those who value convenience because there is no need for cleaning or storage.
A fresh pair every day cuts down on the risk of protein buildup, allergens, or bacterial contamination. But, even if they feel fine at the end of the day, they must not be reused (as most people continue to do); this could increase the risk of discomfort or infection.
- Biweekly Disposable
Biweekly lenses are to be worn for up to 14 days before replacement. They need daily cleaning and storage in a sterile solution to preserve comfort and safety.
These lenses suit those who want to balance daily convenience and long-term affordability. Sticking to the two-week replacement schedule is critical to avoid protein deposits that could irritate the eyes.
- Monthly Disposable
Monthly lenses are a cost-effective option for people who wear contacts regularly. These lenses are designed for up to 30 days of use but demand daily cleaning and storage.
Overwearing monthly lenses outside their intended lifespan can lead to bacterial buildup, eye irritation, and other complications. This is true despite the lenses’ comfortable feeling.
- Extended Wear
Extended-wear lenses are made for continuous use over a specific period, including overnight wear. Depending on the type of lenses, they may be worn for up to a week or even a month without needing removal.
These lenses sound convenient, but because of their extended wear time, they pose a much greater risk of infection. You must adhere to your eye care provider’s guidelines and never exceed the recommended duration to avoid serious issues like corneal ulcers.
Replacing Your Contact Lenses Early
Even when following the recommended replacement schedule, some signs can suggest that your lenses may need to be replaced sooner.
Paying attention to how your eyes feel and appear can help you figure out when it’s time for a new pair.
- Discomfort or Irritation
If your lenses feel dry, gritty, or itchy even after proper cleaning, they may have accumulated deposits that cause discomfort. Continuing to wear such lenses could lead to infections or inflammation.
- Blurry or Cloudy Vision
Lenses should always provide a clear vision. Blurriness or cloudiness might be a sign of protein buildup, small tears, or scratches. All of these indicate an immediate replacement.
- Redness or Swelling
Red or swollen eyes could mean irritation or infection caused by overworn or damaged lenses. Replace them immediately and make an appointment with a professional if the symptoms don’t go away even after removal.
- Visible Damage
Torn or scratched lenses can harm the eye’s surface. Do not wonder if they can still be used, as they undoubtedly increase the risk of complications. Replace damaged lenses to avoid discomfort or injury.
Caring for Reusable Contact Lenses
If you take good care of your reusable lenses, they will be more comfortable and safe for as long as they are supposed to last. You can save your eyes from the risk of irritation or infection by sticking to these guidelines:
- Cleaning
After each use, clean your lenses with an approved solution to remove dirt, debris, and protein deposits. Do not use water or saliva; they are counterproductive and can introduce harmful bacteria. Gently rubbing the lenses with the solution ensures that they stay clear and comfortable.
- Storing
Always store your lenses in a sterile case filled with fresh solution. Reusing old solutions or not cleaning the case regularly can encourage bacterial growth and eventually increase the risk of contamination. To support hygiene, replace your lens case every few months.
- Handling
Wash your hands thoroughly and dry them with a lint-free, clean towel or cloth before you handle the lenses. Do not use scented or moisturizing soaps, as residues may stick to the lenses and cause irritation. Clean hands control the transfer of dirt or bacteria to your eyes.
Each type of lens may have specific care requirements. Always follow the instructions provided by the manufacturer or your eye care provider, including the suggested cleaning methods and storage practices.
Risks of Overwearing Contact Lenses
If you wear contact lenses for more than their recommended duration, you’re opening yourself to several health risks. Some of these may have long-term consequences for your vision.
- Bacterial Infections
Prolonged wear may create conditions for bacteria to thrive on the lens surface. This increases the risk of infections, which can hurt your eyes.
- Oxygen Deprivation
Contact lenses act as barriers to oxygen, and overworn lenses lower the oxygen flow to the cornea. This can result in red eyes, dryness, discomfort, and, in some severe cases, new blood vessels forming in the eye’s whites.
- Corneal Damage
Extended wear can damage the cornea and lead to sores or open wounds that risk infection. You may notice blurred vision, sensitivity to light, and a burning sensation. In extreme cases, untreated damage could end up in permanent vision loss.
Some Special Contact Lens Applications
Contact lenses are mainly used to improve vision, but some are also used for specialized purposes like:
- Orthokeratology (Ortho-K): These lenses temporarily reshape the cornea and are mostly worn overnight to correct vision during the day.
- Decorative Lenses: Cosmetic lenses can be of different colors and borders to change appearance.
- Bandage Lenses: Protective lenses are prescribed to protect the cornea during any healing process.
Whatever the purpose of contact lenses, proper care and hygiene are non-negotiable.
When Should You Seek Professional Help?
In general cases, the answer to this is quite simple. Regular eye exams can catch even those issues that don’t show symptoms. In other scenarios where you notice something is different than usual or bothersome, it’s better to have a professional clear all doubts than to ignore the signs.
Regarding issues resulting from contact lenses, if you are new to them or even a pro having some trouble with them, the best thing to do is consult an eye doctor.
Regular eye exams can help you understand if you’re using the correct type of lenses and following a suitable replacement schedule.
At Jackson Davenport in Summerville, South Carolina, you’ll find a dedicated team with over 50 years of experience in providing personalized eye care.
Dr. Holstead and the staff use advanced equipment to provide personalized solutions for every patient.
Take Control of Your Eye Health
Proper replacement and care of contact lenses are fundamental for sustaining clear vision and averting complications.
Give more attention to your eye health and get professional advice. Contact Jackson Davenport today to schedule an appointment.