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Lougheed Town Centre Optometry and Optical in Burnaby, BC
Located in Burnaby, BC
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Lougheed Town Centre Optical in Burnaby, BC
Home » Eyeglasses and Contact Lenses » Contact Lenses » Gas Permeable (GP) Contact Lenses

Gas Permeable (GP) Contact Lenses

Advantages of gas permeable lenses

  • GP lenses allow your eyes to “breathe” better. GP lenses allow more oxygen to reach the front surface of the eye. This reduces the risk of eye problems caused by hypoxia (reduced oxygen supply). Gas permeable lenses provide a better oxygen supply than most soft lenses because:
    • The silicone-containing lens materials of GP lenses are more permeable to oxygen than many soft lens materials (though new “silicone hydrogel” soft lenses are comparable to GPs in oxygen transmission).
    • GP lenses are smaller in diameter than soft lenses, so they cover up less of the front surface of the eye (the cornea).
    • Gas permeable lenses hold their shape and move on the eye with each blink. This movement pumps oxygen-containing tears under the lens. Soft lenses conform to the shape of the cornea and have only minimal movement with blinks, so little or no tears circulate under soft lenses.
  • GP lenses provide sharper vision. Because they are custom-machined to a smooth surface and maintain their shape on the eye, GP lenses provide sharper vision than soft lenses, which can fluctuate in shape and clarity if they start to dry out. Gas permeable lenses also provide a more stable and accurate correction of astigmatism.
  • GP lenses last longer. GP lenses are rigid, so there’s no worry about ripping or tearing them. They are also easier to keep clean and don’t need to be replaced frequently like soft lenses. With proper care, a single pair of GP lenses can last a year or longer. And since they’re long-lasting, GP can be less expensive than soft lenses in the long run.
  • GP lenses may slow the progression of nearsightedness. In addition to their other advantages, some research suggests that wearing gas permeable lenses may slow the progression of myopia (nearsightedness) in some children. GPs are also used for orthokeratology, where specially designed contacts are worn during sleep to reshape the cornea and improve vision.

The downside of GP contact lenses

So why doesn’t everyone wear GP lenses? Potential disadvantages of GP lenses (compared to soft lenses) include:

  • Need for adaptation. Unlike wearing soft lenses (which are comfortable right from the start), you may need few weeks before you can wear GP lenses comfortably all day. Initially, you may be able to wear the lenses only a few hours daily until your corneas adapt to them. But if you can tough it out for those first few days, you may be pleasantly surprised at how comfortable GP lenses become. Many people who switch from soft lenses to gas permeable lenses say GP lenses are more comfortable than soft lenses (after their eyes fully adapt) and their vision is noticeably clearer.
  • Inability to wear part-time. To fully adapt to GP lenses and to stay comfortable wearing them, you have to wear them every day. If you stop wearing them for several days, you will be more aware of the lenses on your eyes and you’ll have to re-adapt to the lenses.
  • Increased possibility of dislodging. Because they are smaller than soft lenses, gas permeable lenses can dislodge from your eyes during contact sports or if you rub your eyes aggressively.
  • Vulnerability to sand and dust. GP lenses don’t conform to the shape of your eye like soft lenses do, so it’s possible sand or dust can get under your lenses at the beach or on a windy day. (You can minimize this risk by wearing wrap-style sunglasses outdoors.)
  • Higher lens replacement costs. Unlike soft lenses, which come in limited sizes, GP lenses are custom-made to the shape of your eye. This makes GP lenses more expensive to replace if you lose them. Also, it can take up to a week to get a GP lens replaced.So it’s a good idea to purchase a spare pair to avoid the inconvenience of being without your GP lenses if you lose or break one.

Best of both worlds?

Since comfort is the primary barrier to GP use, an interesting innovation is the hybrid contact lens. These lenses have a GP center, surrounded by a soft lens “skirt.” The goal of hybrid lenses is to provide the clarity of a gas permeable lens and wearing comfort that rivals that of a soft lens.

Call for more information and a trial fitting

To see if gas permeable lenses are right for you, call our office for more information and to schedule a trial fitting.

Read about Ortho-K to see if you may be a good candidate for these gentle overnight cornea re-shaping contact lenses.

Clinic Protocols and Patient Guidelines – COVID -19

We have been working diligently to establish protocols to keep both our patients and staff safe during this time and for the foreseeable future. The following protocols and guidelines have been established to ensure the highest level of sanitation possible.

Clinic Hygiene and Sanitization Protocols

 

Arrival to the Clinic

ONLY scheduled patients are permitted to enter the clinic. If you were driven to the clinic, please ask your family/friend to wait for you in the car. Please enter the clinic no earlier than 5 minutes prior to your scheduled appointment.

If you arrive late for your appointment, it may have to be re-scheduled as we must keep on time to ensure enough time for sanitation between patients and avoid overcrowding at the reception area.

Please wear a MASK before entering the clinic.

If you do not have a mask, we will be offering them for a nominal fee.

 

Further Safety Precautions

Touchless Payment

Currently, we are only accepting Interac, Mastercard and Visa cards. If you have extended health insurance, Please inform our staff with all the details. We deal with Sun life, Great-West Life, Blue Cross and Manulife we will bill your insurance first and then charge your credit card the remaining balance.

Physical Distancing

Please be mindful to keep 2M distance if you run into other patients in the reception room. Stand on the floor decals. We are aiming to stagger appointment to avoid congregation in the waiting room.

Sanitation time between each treatment has been scheduled and we are using hospital grade disinfectants to sanitize all high touchpoints, tables, light switches, door handles etc

Practitioner PPE

We will be wearing masks, and some will be wearing face shields, gloves, and scrubs.

Paying for your treatment

 

Booking Appointments

Please email the clinic at info@lougheedoptical.com or call at (604) 420-2115 for your future appointments.

24 Hours Prior to your scheduled appointment

24 hrs. prior to your appointment, you will receive your 24-hour reminder email. It will have a link to the THRIVE BC COVID- 19 Symptom Self-Assessment Tool. The link is: https://bc.thrive.health/covid19/en IF you answer YES to any of the questions, please call the clinic to reschedule your appointment no earlier than 2 weeks. This is extremely important for the safety and protection of our patients, therapist, and our families.

Upon the arrival of your appointment, if we notice any flu-like symptoms or through conversation realize that you have possibly engaged with friends/family who may have been exposed to COVID- 19, we will respectfully ask you to reschedule the appointment.

Product Purchase

Our Staff will assist you in Choosing your Eye Wear, Please DO NOT HANDLE THE FRAMES FROM THE DISPLAY. Once you have made your Frame selection the remaining frames will be sanitized before being placed on the frame bars.

These protocols are in place to ensure the health and safety of you, your loved ones, our staff, our practitioners, and their families.

We thank you for your patience and understanding. We look forward to seeing you soon!

Lougheed Town Centre Optical & Optometry

Located at 9855 Austin Rd, Ste 147, Burnaby, BC V3J 1N4

Phone: 604-420-2115

We are back! We are now open to our normal business hours. Please request an appointment here or call 604-670-3329. We are looking forward to seeing you again. Thank you, and stay safe.