Types of Contact Lenses - Waterloo West Optometry

There are advantages and disadvantages to each of the various types of contact lenses. The more we learn about you (work, sports, general health etc), will assist us in selecting the best lens for your life-style and needs.

Lens Types	Advantages	Disadvantages
rigid gas-permeable (RGP) lenses (hard lens)	excellent vision corrects most vision problems easy to care for can last several years and therefore are generally most cost-effective	longest adjustment period requires patient to wear on a daily basis can pop off and thus not as suitable for sporting activities not available in colours
daily-wear soft lenses	immediately comfortable available in colours to enhance or change your eye colour more stable on the eye and thus less likely to pop off available in most prescriptions (astigmatism, bifocal)	vision may not be as clear as a RGP require annual replacement and thus, long term, is more expensive than RGP lenses
1, 2 or 4 week disposable soft lenses	very simple cleaning system back-up pair is readily available very convenient	available in a more limited range of prescriptions than daily wear vision may not be as clear as RGP lens thinner than daily wear and thus handling may be more difficult
overnight extended-wear soft lenses	can sleep in this lens can wear up to 30 days before removing most convenient	higher risk of infection not available in every prescription more appointments with optometrist to monitor eye health