How long can you safely wear contact lenses each day?
Question: "I've worn monthly contact lenses nearly every day for eight years with no issues. But when I told a friend I average 15 hours daily, she was shocked, insisting the max is eight hours." — O.T., Landsmeer
Ophthalmologist Erik Mertens responds: No two eyes are alike, so there's no universal rule for maximum daily wear of soft lenses.
Risks of Extended Wear
Research highlights issues like corneal vascular ingrowth from oxygen deprivation, eyelid-lens friction causing inflammation, dehydration-induced corneal staining, and allergies to materials or solutions. These develop subtly without symptoms but could end your ability to wear lenses permanently.
Essential Monitoring
Regular exams by a qualified contact lens specialist are vital, along with monthly replacements. Soft lenses are delicate—cleaning alone can create scratches trapping dirt and protein.
Prioritizing Oxygen Flow
This diminishes oxygen permeability, risking inflammation. Silicone hydrogel lenses, available for years, transmit more oxygen and resist drying better than traditional ones.
Care for Lifelong Use
To enjoy contacts into your 80s, shorten wear time and alternate with glasses for optimal corneal oxygenation.
How long do you wear your lenses?
