Contact Lenses, Screens, and Dry Eye

Usually no. Most patients continue wearing lenses after treatment — often more comfortably than before, because the underlying surface disease is finally being addressed. Sometimes a change in material, replacement schedule, or daily wearing time is enough. Only in more advanced cases do we recommend a lens holiday while the Meibomian glands recover, and even then it’s usually a pause, not a permanent stop.

Often, yes. Daily-disposables deliver a clean, fresh surface every morning — no preservative exposure from solution, no protein or lipid build-up over weeks, and no mechanical wear on a single lens. For many dry eye patients the switch alone produces meaningful improvement, which is why this is one of the first coordinated changes we discuss with U Optical.

There’s no single number. What matters is how your eye behaves under that load. A blink rate below 10 per minute, incomplete blinks, and visible tear break-up on imaging are the markers we watch for. For most patients the practical fix isn’t less screen time — it’s better habits (20-20-20 rule, conscious complete blinks, humidified environment, and glare control) layered on top of in-clinic surface treatment.

Temporarily. Artificial tears supplement the tear film but don’t address the underlying Meibomian gland dysfunction that screen work accelerates. Used alone they provide short bursts of relief; used as part of a plan that treats the glands themselves, they become an effective maintenance tool.

Sometimes, yes. Scleral lenses rest on the white of the eye, vault over the cornea, and hold a reservoir of preservative-free saline against the ocular surface all day. For patients with severe surface disease who still want to wear lenses, they can be a game-changer. We coordinate scleral-lens conversations with U Optical where appropriate.

The dysfunction often is — blocked glands can be cleared, inflammation can be calmed, and meibum quality can improve. The dropout is not. Meibomian glands that have fully atrophied do not regenerate. The structural glands that are still present on meibography are the glands we can protect — which is why earlier assessment preserves more of what you have.

Blue light itself is not a proven cause of dry eye — but the behaviour that comes with screens is. Reduced and incomplete blinking, prolonged focus, and dry indoor air combine to dry the ocular surface. Blue-light coatings may help comfort for some patients, but they don’t replace blink and break habits or treat the Meibomian glands.

They can be. Some preservatives in multi-purpose solutions irritate sensitive eyes, and older solution chemistry can accumulate on lens surfaces. Switching solutions, switching to hydrogen-peroxide systems, or moving to daily-disposables can all help. We discuss the right option with your optometrist at U Optical based on your specific findings.

OHIP covers standard ophthalmic examination; advanced diagnostics and in-office procedures are specialised services not covered. Extended health insurance often covers some prescription drops and in-office treatments. UDEI provides itemised receipts.

Refer any contact-lens wearer whose comfort has decreased despite well-fit lenses; any patient with visible Meibomian gland dropout or chronic lid margin disease; any heavy screen user with fluctuating vision or persistent end-of-day dryness; and any pre-laser-vision-correction candidate with marginal tear film stability. Early referral is easier to resolve than established, long-standing surface damage.