One of the reasons people get less tolerant to existing contacts was fewer tears.
That's why it's important for contact lens wearers to check their eyes yearly for better lenses for dry eyes, aside from monitoring for risk of infection and oxygen-deprivation on the eyes.
Read up here.
Dr. Yan L. Liang, OD
Markham Optometrist
www.wardenoptometry.ca
Contact Warden Optometry to book your eye health assessment