Millions of people worldwide enjoy the benefits of contact lenses. Contact lenses are medical devices that help correct a number of vision disorders, including far-sightedness (hypermetropia), nearsightedness (myopia) and astigmatism, and improve eye focusing for reading.

General tips for contact lens users

Contact lens prescriptions are valid for a maximum of 12 months. Visit your eye care specialist regularly and always follow their advice.

Follow the instructions that come with your lenses. If you don't have the instructions, ask your eye care specialist for a copy or look on the manufacturer's website.

Keep the product packaging while you use the lenses, as you may need the lot (batch) number if you develop a bad reaction.

Take the lenses out and see your eye care specialist if you get eye pain, blurred vision, swelling or unusual redness or if you think you may have an eye infection. Bring your contact lenses, lens case and solution with you.

Ask your eye care specialist about wearing contact lenses for sports activities (especially water-based activities) to prevent injury and infection.

Always carry a back-up pair of glasses with a current prescription in case you have problems with your contact lenses.

Top tips for lens wear

Wear your lenses as prescribed. Your eye care specialist will recommend a wearing schedule specific to your type of lenses. Only wear your contact lenses for the time recommended.

Wash your hands before you touch your contact lenses. Use warm water and soap and dry well. This reduces your risk of eye infections.

Make sure your lens is facing the right way before you insert it.

Put your lenses in before you put your make-up on. Take out your lenses before removing your make-up.

Use aerosol sprays such as hairspray and deodorant before putting your lenses in as these can coat your lenses and cause irritation.

Take care with face creams. Moisturising creams around the eyes may irritate contact lens users.

If your lens looks damaged, torn or ripped, do not put it back on your eye.

Do not put your lenses in your mouth or moisten them with saliva. Saliva is not sterile and could cause infection.

Never wear another person's contact lenses.

Do not sleep with your contacts in unless your eye specialist tells you to.

Top tips for lens solution and storage

Clean and store your contact lenses as prescribed. Different types of lenses require special care and certain products. Always use the products recommended by your eye care specialist.

Only use fresh solution to clean and store lenses. Never re-use old solution.

Change the lens solution when the manufacturer recommends, even if you do not use your lenses every day.

If you use a case for storing your lenses, clean it regularly according to your eye specialist's recommendations. Wash your hands before you clean your case. Not cleaning lens storage cases is a major source of infection.

Never use tap or distilled water or any homemade saline solution to clean or store lenses. These are not sterile and can lead to severe infections.

Don't let the top of the lens solution bottle touch anything. Keep the lid tightly closed when not in use.

Don't switch your type of solution without asking your eye care specialist.