Contact lenses are fitted, not simply selected.
A contact-lens prescription includes details beyond the spectacle prescription because the lens sits directly on the eye. Base curve, diameter, material and design can influence movement, comfort and vision. A professional fitting helps determine whether a lens is suitable and whether follow-up is needed after real-world wear.
Replacement schedules are part of the prescription.
Daily disposable lenses are worn once and discarded. Other soft lenses may be replaced every two weeks or monthly, depending on the exact product and recommendation. Stretching a lens beyond its intended schedule can increase deposits and reduce comfort. Use the schedule prescribed for that lens, even when it still feels acceptable.
Specialized options
- Toric lenses for many astigmatism prescriptions
- Multifocal designs for near and distance correction
- Rigid gas-permeable lenses for selected needs
- Coloured or cosmetic lenses that still require appropriate fitting
Care habits protect comfort.
Wash and dry hands before handling lenses. Use only the recommended solution for reusable lenses and never top up old solution in a case. Replace cases regularly, keep lenses away from tap water and follow instructions about sleeping, swimming or showering while wearing them.
Know when to stop wearing a lens.
Persistent redness, pain, unusual light sensitivity, discharge or sudden vision change should not be treated as a normal adjustment problem. Remove the lens and seek appropriate eye-care advice. Contact lenses can be remarkably convenient, but healthy wear depends on respecting symptoms rather than trying to push through them.