Eye tests should normally be every two years for adults.
An eye examination includes a health check of the eyes. It also tests for visual problems which can be corrected with glasses or contact lenses.
Optometrists may detect health and eye disabilities such as diabetes, high blood pressure, glaucoma, cataract and many other conditions, before you notice any effect on your sight.
Information on NHS eligibility and private eye tests can also be found at your local optician.
To keep you eyes healthy make sure you have regular eye exams, stop smoking, eat a healthy diet and protect your eyes from UV and the sun.
To find a local optician you can see our website: nelondonloc.com
or visit NHS Choices website.