Optician is a general term that covers both optometrists and dispensing opticians.
Optometrists carry out eye tests to check the quality of your sight. They look for signs of eye disease which may need treatment from a doctor or eye surgeon and prescribe and fit glasses and contact lenses.
Dispensing opticians fit glasses and contact lenses, but do not test eyes. They can give you advice on types of lens, such as single-vision or bifocal, and help you to choose frames.
A full list of opticians in Hounslow is available by going to the Opticians in Hounslow page on the NHS Choices website.
If you don’t qualify for a free NHS sight test, you will have to pay for a private sight test. The cost of private sight tests varies, so it’s advisable to shop around.