Our standard lenses are the same as those provided by the vast majority of opticians and are made of a lightweight plastic material known as CR39. For more information there is a Wikipedia page detailing the properties of this material and why it became the popular choice for making scratch resistant lenses.
Frequently Asked Questions
One Stop Glasses should be one of the quickest ways of getting a pair of glasses ordered online and delivered to your door.
We put our best efforts into making sure we have all the frames we display in stock. Where we are caught out we can usually get replacement stock next day from our wholesalers.
We carry many lenses in stock and manufacture and glaze lenses on-site.
Your order is posted Royal Mail First Class, and where the contents make possible will be posted in a packet that will fit through a letterbox. Our packets are tracked to the point of delivery but you do not need to be at home to sign for them.
Typical lead times are as follows,
Standard Single Vision - Allow 1-4 working days
Single Vision High Index, Photochromics etc. - 2-5 working days
Varifocals - 5-10 working days
Rimless orders - add 1-3 working days
Many factors can affect how long it will take to make and despatch your
glasses, if your order is time sensitive feel free to let us know.
What are Varifocal lenses, or progressive lenses?
As their name suggests, varifocal lenses allow you to see at varying distances, the power increases progressively down the lens.
This is necessary as the eye gradually loses the ability to focus on near objects as we age, and needs some help.
The drawback to this is that it is only the top part of the lens that is suited to distance vision, so wearers can have problems when walking around because the floor isn't as clear, and because of the varying power of the lens there is swim and sway effect when moving.
This happens to a varying degree depending on the quality of the lens, we have 3 options, which we consider all to be good lenses,
* A Standard Freeform lens, this is a traditional front surface progressive design with an aspheric freeform back surface, the aspheric surface has digital enhancements to minimise the problems noted above. A well performing lens at a budget conscious price.
** An Atoric Dual Surface Freeform lens, the progressive surface is worked on the front and the back of the lens, this makes for wider areas of clear vision and increased reduction of swim, sway and other aberrations. This should be considered a premium lens and in our opinion gives the best 'bang for your buck'.
Both of the above are supplied with a Hard Hydrophobic Anti Reflection coating.
*** HOYA Balansis, in our opinion the best lens on the market before going down the 'tailor made' route (which is something that cannot be offered online anyway).
It is a highly technological lens and will present the minimum of problems encountered with varifocal lenses. The Balansis is supplied with Hoya's High Vision Long LIfe coating, again we believe this to be the best available and it comes with a 2 year no quibble guarantee where misuse isn't an obvious factor.
If you are in any doubt, please feel free to email us an image of your prescription and we will check it against your order.
When entering your prescription please include all the details (we can ignore any we don't need),
And include +/- signs and any decimal places.
(On a handwritten or Specsavers prescription, the +/- sign may be above the number)
After an eye examination you will be provided with a copy of the results of the sight test element, your spectacle prescription. You shouldn't have to ask for it, it is a legal requirement.
Prescriptions can take a handful of different formats, but they all contain the same details.
There are 2 main differences,
First, whether Right and Left are side by side, or one above the other.
Secondly, whether you have a Reading/Near prescription, or an Add.
The GOS 2 form style, possibly the most common and as such the way we lay out our prescription entry form, as shown below,
The same prescription if written with an add, rather than the full details for near, would look as follows,
These details are directly transferable to our online form, as per below.
The same prescription might look like this...
Same details, but the details for the Right Eye written above the Left.
Some correct examples of prescriptions can be seen below,
So, Points to note:
- Sphere/Sph values can be plus or minus (but will usually be both plus OR minus)
- Plano and the infinity sign mean Zero
- DS written in Cyl means Sph only (and can be omitted)
- Cylinder/Cyl values can be plus or minus (and will always be both plus OR minus)
- There can be just a Sph value, without Cyl and Axis
- Where there is Cyl, there is always an Axis, and vice versa.
Example of incorrect entry can be seen below... Avoid these errors or if necessary check the details with your optometrist and we won't need to delay your order by querying the details.
2 problems with this one, there's a mix of plus and minus Cyl,
And there is only a reading prescription, which may well be correct but if we had all the details we would know for sure.
And 2 more problems with this one, no +/- signs, no decimal places. It is customary to assume a value is plus unless otherwise noted, but our enquiries prove that this is not a safe assumption.
This one is missing a value each for Right and Left, there will either be just a Sph value, or all 3 Sph, Cyl and Axis.
The absolute simplest way of doing this is to buy the glasses and select Frame Only - No Lenses under Glasses type. We will then send you just the frame.
Any unwanted frames returned to us will be refunded immediately on receipt, any you wish to keep we will merely arrange to charge for any lens add-ons.
Much is being made of the potential harm of blue light on our eyes as
more of us spend longer in front of digital screens, the following is
our understanding of the situation.
Light at the blue end of the spectrum is essential for well being, cognitive function and sleep and wake cycles.
However some wavelengths of blue light, in particular those emitted by digital devices, can be to our detriment.
Do you remember being asked whether the red or green target is clearest during an eye exam?
is because different colours of light focus at different distances and
this simple test can help an optometrist fine tune your prescription so
that your eyes can relax while looking at the normal things around us.
With blue light being at the end of the visible spectrum, and focusing in front of the retina, when viewing digital screens the eye needs to constantly refocus causing potential fatigue.
So the benefits of our Blue Block coating?
- Screens out Blue Light allowing only beneficial light to pass through the lens.
- Reduces eye strain and fatigue.
- Enhanced contrast and clarity
- Reduced glare.
- All our Blue Block lenses are also Easy Clean, Hydrophobic and offer UV protection.