When applying for a driving license (or renewing it) you need to have your eyes tested. The optician needs to have RTA approval. Seek out only RTA-approved eye test centres nearby, but eye tests are more than vision.
A good Optometrist will also do eye health screening, which will check for underlying eye conditions, as well as broader health issues such as diabetes. It’s important that you tell your Optometrist about your general health and any medication you may be taking. That’s because certain medical conditions and prescription drugs can affect your vision.