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Prescription

Entering your prescription

If you're reading this then we're guessing you have a prescription and are making sure you're armed with the correct information before ordering and paying less for your new glasses.

Our prescription entry table should closely match the layout of your glasses prescription.
All we require you to do is

1) Select the type of lenses you require, ie, distance, reading, bifocal or varifocal.

2) Choose any additional extras for your lenses.

3) Transfer the details from your prescription into the corresponding boxes.

In most instances you will not be able to fill in all of the boxes, this is perfectly normal, and don't worry because if there is any information missing it will be obvious to us and we will contact you before processing your order.

Distance glasses

If you need spectacles just for distance (driving, TV etc.) then you will only need to fill in the top row of numbers as in the example below,


Reading Glasses or Bifocal / Varifocal glasses

If you have a reading prescription you will either choose reading glasses, bifocals or varifocal glasses.
Your prescription will either have a distance prescription with an add, as below,



or separate details for distance and near,



Some further pointers...

We can't have too much information. If you enter all the details from your prescription we will only use what we need.

Pay particular attention to plus(+) and minus(-) values.

Don't guess any values, if you think something is missing from your prescription or isn't clear then ask your optometrist to confirm the details or contact us for advice

What the numbers mean.

We cannot do full justice to your prescription on a page of a web site so the following is very general, however it may be of interest and should help you when you come to fill in your details when ordering.
  • Sphere, or Sph. This value represents the strength of the lens needed to correct your vision. A negative (-) value would suggest short sightedness while a plus or positive (+) value would suggest long sightedness. When entering your prescription please make sure you have selected + or - correctly, bear in mind that while normally to the left, sometimes the positive + or negative - symbol is often written above the number.

  • Cylinder, or Cyl. Astigmatism (which sounds much worse than it is!) is corrected by this component of your prescription. When an image passes through the various structures in the eye, as well as not focussing in exactly the correct place, it may distort slightly in shape as if being stretched or shrunk in a certain direction. The image will be squared up if you like, by a lens with cyl. This value will also be + or -.

  • Axis, astigmatism can occur in any direction, vertically, horizontally or at any angle in between. The cyl portion of your prescription (or lens) will be placed at the axis where the astigmatism occurs. This value will be between 0 and 180.

  • Add, on your prescription the add is a value which needs to be added to your distance prescription in order to provide clear focus close up. Presbyopia occurs after a certain age (usually around 40) and the ability of the eye to naturally zoom in on near objects diminishes. The amount of add required depends on a variety of factors including age and what purpose the specs are intended to fill.
    An add will have a maximum working distance which users might need to take into account if they use a computer or other items we might consider as being intermediate

    • 1.00 add - Maximum working distance of 1.00m / 39 inches
    • 1.25 add - Maximum working distance of 80cm / 31 inches
    • 1.50 add - Maximum working distance of 66cm / 26 inches
    • 1.75 add - Maximum working distance of 57cm / 22 inches
    • 2.00 add - Maximum working distance of 50cm / 19 inches
    • 2.25 add - Maximum working distance of 44cm / 17 inches
    • 2.50 add - Maximum working distance of 40cm / 15 inches
    • 2.75 add - Maximum working distance of 36cm / 14 inches
    • 3.00 add - Maximum working distance of 33cm / 13 inches
    • 3.25 add - Maximum working distance of 30cm / 12 inches
    • 3.50 add - Maximum working distance of 28cm / 11 inches
    • 3.75 add - Maximum working distance of 26cm / 10.5 inches
    • 4.00 add - Maximum working distance of 25cm / 10 inches
The above table shows the maximum working distance, or the far point for reading glasses with a given add value. The near point will vary, again due to age etc.
This information is intended for reference, and for you to be clearer about what to expect from your specs before you place your order.
Remember to be clear during an eye examination about what you use your glasses for.