Why are my contact lenses uncomfortable by the afternoon?

A soft lens rests on the tear film and is covered by it. The oil layer on top slows evaporation across both the lens and the eye. When the meibomian glands stop releasing oil properly, that layer thins, the surface dries faster, and the lens starts to feel like an object rather than something you forgot you were wearing.

That is why the classic account is "my lenses are fine in the morning and I want them out by four o’clock". Dryness is cumulative through the day.

Treating the glands is what changes the underlying picture, and people who complete a course of treatment commonly find they get more comfortable hours out of the same lenses.

Alongside that, there are practical things worth reviewing with your optometrist: the lens material and replacement schedule, how many hours a day you wear them, and whether daily disposables suit you better. Preservative-free drops can be used with lenses in; many preserved drops should not be, so check the packaging rather than assuming.

Taking lenses out for the last stretch of the evening gives the surface a chance to recover, and glasses for screen-heavy afternoons are not a defeat.

Usually not. Most people in this position are not failing at contact lens wear — they have an untreated lid problem that makes lens wear harder than it needs to be. The point of treatment is to get comfortable wear back, not to talk you out of lenses.

If you are considering stopping lenses altogether because of comfort, that is worth one assessment first.