Perfect vision is a blessing enjoyed by just four in 10 of the population.
Support usually comes in the form of a corrective lens, and for increasing numbers of people, that means a contact lens.
However, while these thin optical discs bring clarity to the blurred vision of millions, many people could also be putting their vision at risk.
A recent survey found that more than 90 per cent of British contact lens wearers regularly wear them for longer than recommended by their optometrist.
The British Contact Lens Association has the following advice:
· Have regular check-ups.
· Wash and dry your hands before handling lenses.
· Rub, rinse and store lenses in the recommended solution before and after each use (except single use lenses, which should be discarded after each wear).
· Clean the lens case with solution, wipe with a clean tissue then air dry after each use.
· Replace the lens case at least once a month.
· Discard lenses and solutions that are past their expiry date.
· Stick strictly to the recommended wearing schedule and replacement frequency.
· Get tap water, or any other water, on your lenses case.
· Wet lenses with saliva.
· Put a lens on the eye if it falls on the floor or other surface, without cleaning and storing again.
· Continue to wear lenses if your eyes don’t feel good, look good, or see well.
· Re-use or top up solution – discard and replace with fresh solution each time lenses are stored.
· Wear lenses left in the case for more than seven days without cleaning and storing them in fresh solution.
· Sleep in lenses unless advised to by your practitioner.
· Wear any lens overnight if you are unwell.
· Use any eye drops without advice from your contact lens practitioner.