Tips & Guides
How to read your Prescription
What is a 'Prescription'?
Whenever you go to the opticians for an eye examination, there tends to be two main parts. The first being the health check and the second being the vision check.
After a complete examination, the Optometrist will provide you with a copy of your unique 'prescription' for glasses. The prescription, contains useful information such as the correct power of lenses needed to improve your eyesight.
In this article we will give you a simple breakdown of the key ingredients of a prescription and also elaborate on how to understand whats written.
This is the number of the power required to correct the vision.
Minus (-) = Short-Sighted
Plus (+) = Long-Sighted
Another power needed to correct the vision.
The 'CYL' power is the number required to correct the 'uneven' part of the eye in Astigmatism.
Where we position the 'CYL' power, to correct the Astigmatism.
If you have no 'CYL' correction on your prescription, the AXIS will also be left blank.
This is the 'ADD' power for near work (e.g. reading).
This power is important for somebody that needs reading glasses.
This is the power to help correct the intermediate range. If you need glasses just for computer work or painting etc, this would be for that.
This is the power (Dioptres) needed to help the eyes muscles to focus. If you have slightly weaker eye muscles or need help with alignment this will be written on your prescription.
This is the direction we need to put the prism to help with the eye alignment. Prism power and Base direction will normally come in pairs.
Sometimes Base direction can be written in a different format, e.g: BU, BD, BI, BO (Base Up, Base Down, Base In, Base Out)
If you have any questions or concerns about anything, you can contact us and we will help you step by step to get what you need to complete an order.
Phone: 0121 792 4322 (Mon-Fri, 9am-5pm)