Why You Might Consider Switching Contact Lens Types

Contact lenses are not one-size-fits-all. Over time, your vision needs, lifestyle, or eye health may change, prompting a shift from one lens type to another. Perhaps you’ve worn standard spherical lenses for years but now find your eyes drying out by midday, or maybe you’ve developed astigmatism and need toric lenses. Some wearers transition from soft to rigid gas-permeable (RGP) lenses for sharper vision, while others switch from monthly disposables to daily disposables for convenience and hygiene. Whatever the reason, making the change safely is critical. This guide walks you through the critical steps, precautions, and best practices for switching between contact lens types without compromising your eye health.

Step 1: Schedule a Comprehensive Eye Exam

Before even ordering a new lens type, schedule a comprehensive eye exam with an optometrist or ophthalmologist. This is non-negotiable. An eye exam does more than check your prescription; it evaluates the overall health of your eyes, including the cornea, tear film, and eyelid health. Your eye care professional (ECP) can identify underlying conditions that might affect lens wear, such as dry eye syndrome, allergies, or corneal irregularities.

What the Exam Includes

  • Refraction to determine your exact prescription, including sphere, cylinder, and axis for astigmatism or add power for presbyopia.
  • Corneal topography to map the curvature of your cornea, essential for fitting RGP or scleral lenses.
  • Tear film evaluation to assess for dry eye, which influences whether you can comfortably wear certain lens types.
  • Slit-lamp examination to inspect your cornea, conjunctiva, and eyelids for signs of infection or inflammation.

Your ECP will use this information to recommend the safest and most effective lens type for your unique eyes. Never skip this step—switching lenses without a proper exam is like buying shoes without measuring your feet.

Understanding the Different Types of Contact Lenses

Knowing the characteristics of each lens type helps you and your ECP make an informed decision. Here’s a breakdown of the most common categories:

Spherical Lenses

These are the most common lenses, designed to correct nearsightedness (myopia) or farsightedness (hyperopia). They have the same power throughout the lens. Spherical lenses are available in a wide range of materials, including hydrogel and silicone hydrogel, and in various wearing schedules (daily, bi-weekly, monthly).

Toric Lenses

Toric lenses correct astigmatism, a condition where the cornea is shaped more like a football than a basketball. These lenses have different powers in different meridians and must maintain a specific orientation on the eye. They are available in soft and RGP materials. Switching to toric lenses requires a precise fitting and may take a few days to stabilize on your eyes.

Multifocal and Bifocal Lenses

These are used to correct presbyopia, the age-related loss of near focusing ability. Multifocal lenses have multiple zones for distance, intermediate, and near vision, while bifocal lenses typically have two distinct zones. They come in soft and RGP designs. Not everyone adapts to multifocal lenses immediately; a trial period is often recommended.

Rigid Gas-Permeable (RGP) Lenses

RGP lenses are made of durable plastic material that allows oxygen to pass through to the cornea. They provide exceptionally crisp vision, especially for astigmatism or irregular corneas (e.g., keratoconus). RGP lenses require a longer adaptation period compared to soft lenses, typically a week or two of gradually increasing wear time.

Scleral Lenses

Scleral lenses are a type of RGP lens that vaults over the entire cornea and rests on the sclera (the white part of the eye). They are often used for conditions like keratoconus, severe dry eye, or post-surgical corneas. These lenses are filled with a saline reservoir that keeps the cornea hydrated, making them very comfortable once fitted properly.

Specialty Lenses

  • Hybrid lenses: Feature a rigid center surrounded by a soft outer skirt, combining the visual clarity of RGP with the comfort of soft lenses.
  • Colored or cosmetic lenses: Can enhance or change your eye color. They require the same safety precautions as any other lens.
  • Orthokeratology (Ortho-K) lenses: RGP lenses worn overnight to temporarily reshape the cornea for clear vision during the day. They are used for myopia control in children and for some adults.

Step-by-Step Transition Process

Once you and your ECP have chosen a new lens type, follow these steps for a safe switch:

1. Get a Proper Fitting

Even if you’ve worn contacts for years, a new lens type requires a new fitting. A fitting involves evaluating how the lens moves on your eye, how well it centers, and how it interacts with your blink. For toric and multifocal lenses, the fitting is especially critical. Your ECP will likely give you a trial lens to wear before ordering a full supply. Do not skip the trial period—it allows you to test comfort and vision in real-world conditions.

2. Follow the Wearing Schedule

For most lens types, you should slowly introduce your eyes to the new material. For example, when switching from soft to RGP lenses, you might start with 4 hours on the first day, 6 hours on the second, 8 hours on the third, and gradually increase until you reach your desired wearing time. For soft lenses, especially daily disposables, the adaptation is usually quicker, but you may still need a day or two to adjust to the feel of a different material (e.g., from hydrogel to silicone hydrogel). Always adhere to the schedule provided by your ECP.

3. Use Proper Insertion and Removal Techniques

Different lens types may require slightly different handling. RGP and scleral lenses, for instance, are larger and less flexible than soft lenses. Your ECP or a technician should demonstrate the correct insertion and removal methods. Practice at the office first. For scleral lenses, you may need to fill the bowl with saline before insertion, which is a different technique than standard soft lens placement. Take your time—it is normal to feel clumsy at first, but with practice it becomes second nature.

4. Never Mix Care Systems

Each lens type has a recommended care system. Some lenses require a specific multipurpose solution, while others, like RGP lenses, may require a cleaner, a soaking solution, and a wetting drop. Never swap care systems without your ECP’s approval. Using the wrong solution can damage the lens material or cause a chemical reaction that irritates your eyes. Always read the manufacturer instructions for your specific lens type.

Hygiene and Maintenance Best Practices

Good hygiene is your best defense against infections. Here are essential rules:

  • Wash your hands with soap and water before touching your lenses. Dry them with a lint-free towel.
  • Clean your lens case daily with fresh solution and let it air dry. Replace your case every 1-3 months.
  • Never top off solution in your case. Always use fresh solution.
  • Never use water (tap, distilled, or sterile) on your lenses or case.
  • Follow the replacement schedule strictly. Daily lenses are designed for one use only; monthly lenses must be discarded after the recommended period.
  • For RGP and scleral lenses: You may need to use a protein remover tablet weekly to keep deposits from building up.

Monitoring and Troubleshooting

During the first few weeks after switching, pay close attention to any changes in your eyes. Some symptoms may be normal, but others require immediate action.

Normal Adaptation Symptoms

  • Mild awareness of the lens on the eye for the first few days
  • Minor blurriness when blinking, especially with multifocal or toric lenses (this usually resolves within a week)
  • Slight tearing or dryness that improves over time

Red Flags Requiring Immediate Consultation

  • Pain, redness, or swelling in the eye
  • Persistent blurry vision that doesn’t improve with blinking
  • Light sensitivity or halos around lights
  • Excessive discharge or a feeling of something gritty in your eye
  • Abnormal lens movement (too much or too little) when you move your eyes

If you experience any of these, remove the lens and contact your ECP immediately. Do not try to “tough it out” – eye infections can become serious quickly.

Special Considerations for Specific Switches

Switching from Soft to RGP Lenses

This is one of the most common switches, often driven by the need for sharper vision or better tear exchange. Expect a longer adaptation period. RGP lenses feel more noticeable at first because they are smaller and move more with each blink. Use artificial tears recommended by your ECP to help with comfort. You may also need to adjust your blink pattern to keep the lens centered. Some users experience a sensation of the lens edge on the upper lid—this typically fades within two weeks.

Switching from RGP to Scleral Lenses

Many wearers transition to scleral lenses for comfort or for corneas that have become irregular. Scleral lenses are larger and often more comfortable due to the saline reservoir. However, the insertion technique is more involved. You may need a special plunger for insertion and removal. Be patient with the learning curve; many people find scleral lenses life-changing after the first week.

Switching from Monthly to Daily Disposables

This switch is usually for convenience and hygiene. Daily lenses eliminate the need for cleaning and storage, which greatly reduces the risk of infection. Most people adapt quickly because the material is similar. However, cost can be higher, and the lenses may feel slightly different if switching from a hydrogel to a silicone hydrogel material. Dry eye sufferers often benefit from daily silicone hydrogel lenses due to higher oxygen permeability.

Switching to Multifocal Lenses

If you are over 40 and start noticing difficulty reading, you might switch from single-vision to multifocal lenses. This often requires a “neuro-adaptation” phase where your brain learns to filter through the different focal zones. It can take two to four weeks for your vision to feel natural. Some people experience ghosting or shadowing at first, which usually diminishes. If after a month you are still uncomfortable, talk to your ECP about a different multifocal design, such as a segmented bifocal or aspheric design.

Common Mistakes to Avoid When Switching Lenses

  • Skipping the trial period. Even if your friend loves a certain lens, your eyes may respond differently. Always complete the trial.
  • Using expired solution. Check expiration dates on all lens care products. Using expired solution can reduce its efficacy.
  • Rubbing eyes excessively. Rubbing can dislodge lenses or irritate the cornea, especially during adaptation.
  • Ignoring minor discomfort. Persistent irritation, even if mild, should be evaluated. It could signal a poor fit or budding infection.
  • Not having backup glasses. During the transition, you may need to give your eyes a break. Always carry glasses for at least the first month.

External Resources and Further Reading

Common Myths About Switching Lenses

There are many misconceptions that can lead to unsafe practices. Let’s clear them up:

  • Myth: Once you wear one type of lens, you’re stuck with it. Reality: Your eyes and needs change. Switching is safe when done under an ECP’s supervision.
  • Myth: You can switch without a new prescription. Reality: Lenses require a valid prescription that specifies the lens design, parameters, and material. You cannot legally or safely use your old prescription for a different lens type.
  • Myth: RGP lenses are always uncomfortable. Reality: While there is an adaptation period, most people find RGP lenses comfortable once fully adjusted. They also provide better oxygen flow and less glare than many soft lenses.
  • Myth: Daily disposables are not as effective as monthly lenses. Reality: Daily lenses are just as effective for vision correction and are often healthier because they are discarded after each use, reducing the risk of deposits and infection.

Long-Term Eye Health Maintenance

Switching lens types is a great time to reassess your overall eye care routine. Make sure you:

  • Visit your ECP annually for a comprehensive eye exam.
  • Replace your lens case every three months or immediately after an eye infection.
  • Wear UV-blocking sunglasses over your contacts when outdoors.
  • Never sleep in lenses unless they are specifically approved for extended wear by your ECP.
  • Carry a backup pair of glasses, especially during adaptation periods.
  • Use preservative-free artificial tears if you experience dryness, but choose a brand compatible with your lens material.

Final Checklist for a Safe Switch

  1. Schedule a comprehensive eye exam and fitting.
  2. Obtain a valid prescription for the new lens type.
  3. Receive proper training on insertion, removal, and care.
  4. Get a trial pair and follow a gradual wearing schedule.
  5. Monitor your eyes for any signs of irritation or infection.
  6. Keep regular follow-up appointments with your ECP.

Switching contact lens types can be a positive step for your vision and comfort, but only when done with the right preparation and professional guidance. Your eyes are irreplaceable. Treat them with the care they deserve.