Should I refrain from wearing contact lenses before having a sight test and if so, for how long?
There are two different types of eye examination - which one you have will depend on whether you wear lenses or not.
An eye examination is a check-up which you have every couple of years to check your eyesight and the health of your eyes.
A contact lens examination is an aftercare appointment to see how well your eye is while wearing contact lenses.
If you're having an eye examination, you'll need to remove your lenses about two hours before the appointment. If you're having a contact lens examination, you'll need to wear your contact lenses as usual so that your optician can check the fit of the lenses etc.