Your optometrist will give you a timetable to increase gradually the length of time you wear your lenses, starting with a few hours each day. It can take up to a fortnight to reach maximum wearing time with gas-permeable lenses, but it can be much quicker for soft lenses. You will have to follow a routine of  cleaning and disinfecting your lenses unless you have daily disposable lenses. Good hygiene and lens care is essential to keep your lenses and your eyes in good condition. Always follow the care regime your optometrist advises and attend regular aftercare visits.