Help with your Lens Options
Here at internetspecs.co.uk, we have kept our lens options simple and sometimes FREE. Because of their high overheads, high street opticians need to charge you a lot for both frames and lenses. Online opticians will often make high profits on just the lenses. We have chosen to do neither! Our overheads are not high so there is no need to have our prices high - good for you!
• We have FREE Single Vision 1.6 Thin & Light
Anti-Reflection (AR) Lenses for all of our
designer frames*. These lenses will be
noticeably thinner and lighter than standard 1.5
or 1.56 lenses. For those who are long sighted
(a positive (+) Sphere (SPH) reading), we will
use 1.6 Aspheric lenses which will make the
centre of the lenses even thinner.
• Our 1.67 Anti-Reflection (AR) Lenses (at just
£12 extra) are even thinner and more lightweight
than our free 1.6 lenses. They are great for any
prescription but are particularly good for those
who have a high prescription (sphere (SPH)
reading above +/- 3). No matter what your
prescription is, our 1.67 lenses are always
Aspheric. Aspheric lenses allow the lenses to
be made thinner and flatter.
• Our 1.74 Anti-Reflection (AR) lenses are the• Please select 'Frame Only' if you just require the
thinnest and most lightweight plastic lenses
available and cost just £55 extra. They are only
available if you have a negative prescription
(the sphere (SPH) reading). We recommend
choosing a 1.74 lens if your prescription is
higher than -4.50 for the sphere (SPH) reading
(i.e: from -4.50 to -8). Our 1.74 AR lenses are
also Aspheric which contributes to the lenses
being thinner and flatter.
glasses frame. These will be posted to you with
'dummy' (low quality plastic) lenses that you can
easily take out (we do not recommend wearing
glasses with dummy lenses).• Our 1.56 Sunsensors™ lenses and our 1.5 &
1.6 Transition™ lenses (both 'Photochromatic
Lenses' and available in either grey or brown),
change colour in sunlight, meaning that you can
use them during the day or at night. They are
temperature dependent, darkening better in
colder climates such as Northern Europe (in
snowy conditions, they become extra dark, due
to the intense ultraviolet light). Both Sunsensors™
and Transitions™ need ultraviolet rays from
daylight to darken, meaning they're not always
suitable for behind a car windscreen. The lenses
without anti-reflection AR coating are darker in
sunny conditions, whereas with anti-reflection AR
coating, they are better inside and at night
because they are lighter in colour. The thin 1.6
Transition™ lenses are better with the AR
coating. The higher lens index value (1.6)
causes reflections to increase. Having an AR
coating helps to eliminate this.• Our 1.59 AR Polycarbonate lenses are good for
sport as they are tougher than normal lenses.
They're know as 'plastic aluminium' - weight for
weight, they're four times the strength of
aluminium - the material is used for riot shields.
Because they're 1.59, they're also thin lenses. Please note:
1.56 Sunsensors™, 1.5 Transitions™ and 1.59
polycarbonate lenses have a more limited
prescription range than we have for all our other
lenses. Certain prescriptions will require more
expensive 'surfaced' lenses. If this is the case for
you, we will contact you very soon after you place
your order to ask if you wish to pay the extra cost
for 'surfaced' lenses or, in the case of the
photochromatic lenses, if you wish to upgrade to
1.6 Transitions™, or if you wish to change or
cancel your order.• Our Polarised lenses are tinted and eliminate
glare, offering 100% protection from harmful UV
rays. They're ideal for those sunny sunrises and
sunsets when you're 'blinded' by the sun
(dangerous when you're driving). Polarised lenses
must not be worn while driving at night. They
come in 2 standard colours - grey and brown -
which we have as colour options. If you wish to
order other colours - green, blue or pink - please
use our 'Any Additional Information' box to tell
us which colour you'd like and just select either
grey or brown on the lens option. • Our standard 1.5 Tinted Sun Lenses are ‘fixed
tint’ (they are always coloured and so are for day
use only). They will absorb 85% of sunlight.
* Occasionally, for those with a low prescription
(sphere (SPH) reading around Plano (0) to 1)
selecting a pair of semi-rimless (supra) glasses,
we may have to use a thicker lens (1.5 or 1.56)
to enable glazing to occur. Here is the technical
bit! - for semi-rimless glasses, the edges of the
lenses have to be thick enough to allow a
groove to be cut to hold the nylon thread. On
occasion, a 1.6 lens will be just too thin.* For the rare occurrence that you have a positive
(+) prescription sphere (SPH) reading, you have
a small pupillary distance measurement and you
choose a wide frame, we would have to use a
special lens (known as a ‘surfaced’ lens) to get
the centre of the lens in the correct place. In the
unlikely event that this occurs for you, we will
need to ask you for an additional payment.
Please be assured that if this case arises for
you, we will contact you soon after you place
your order to ask if you wish to pay for the
special lenses or if you wish to change or
cancel your order.
Help with your Prescription Before you order prescription glasses at internetspecs.co.uk, you need to have a copy of your prescription that was given to you at your last eye test. To order from us, this needs to have been within the last 2 years. If it has been longer than this time (or you have never had your eyes tested), please go to an optician and get an eye test.
After the examination, ask for a copy of your prescription - the optician is legally obliged to give it to you. Then you'll be ready to order your designer frames from us. You can also ask the optician to give you your Pupillary Distance (PD) measurement, although he/she does not have to give you this (there may be a small fee - see our ‘Pupillary Distance' section for more on this).
On your prescription, abbreviations will more than likely be used:• ‘R’ will refer to your ‘Right Eye’
• ‘L’ will refer to your ‘Left Eye’ SPHERE (SPH)This figure designates the strength of lens needed to correct your focus: A positive (+) SPH for long sightedness (problems focusing on close objects) and a negative (-) SPH to correct short sightedness (problems focusing on far objects). If you are neither short nor long sighted, on your prescription, you will see the word PLANO or PL, or the figure 0 (sometimes 0.00), or the sign for infinity: ∞ However, this does not necessarily mean you have perfect eyesight as you may have an astigmatism (see below).CYLINDER (CYL)
• ‘SPH’ will refer to ‘SPHERE’
• ‘CYL’ will refer to ‘CYLINDER’
• ‘ADD’ or ‘NEAR’ refers to ‘NEAR ADDITION’
The CYL figure helps to correct an Astigmatism - which means the eye has problems focusing at particular angles. The eye will be slightly rugby ball shaped rather than football (soccer for our American customers!) shaped. This box on your prescription MAY BE EMPTY, in which case you do not have to put anything in the ‘CYL’ part on our prescription form. Similarly, an optician may write: ‘DS’ in the CYL box. If you see this, you can ignore the ‘CYL’ part of our form.AXIS There will only be an AXIS figure if you have a CYL figure. It tells us where exactly on your eye the astigmatism is. Be particularly careful inputting this figure to us. It is measured in degrees from 0 to 180. Occasionally there will be a 1/2 or .5 figure.NEAR ADDITION (ADD)
The ADD('s) is the Additional correction needed for READING and/or COMPUTER USE. The figure is almost always the same for each eye so if it is just written once on your prescription, do not be confused - you can just add the same figure into both boxes on our form. SOME IMPORTANT POINTS • Some prescriptions will include a figure in the PRISM section. The prism helps to correct such
conditions as muscle imbalance problems. If
your prescription includes a figure in the prism
box, please get in touch with us through our
‘Contact Us’ page and we may be able to help
you but it will involve an additional cost.• Please double check you have entered the (+)
and (-) correctly into our form• Sometimes an optician may, for example, write:
+050 or +175 for the SPH, CYL or the ADD.
He/she has simply omitted the dot and you can
enter into our form as: +0.50 or +1.75
• Sometimes, an optician may write the + or -
above the figure like this: + or this: - 0.5 1.5IF YOU ARE IN ANY WAY UNSURE ABOUT
YOUR PRESCRIPTION, KNOW THAT YOU CAN:
Upload a Scan of your prescription to us using the form opposite or
Email (through our ‘Contact Us’ page) or
Post it to us (address found on our ‘Contact Us’ page).
OR, if you need ANY CLARIFICATION, you can call
+44 (0)8435 230572 or +44 (0)1908 965985
Help with your Frame Size
The simplest way for you to get the right frame size is to read the measurements from a comfortable pair of glasses that you already own. You can usually find the dimensions (perhaps with the help of a magnifying glass) on the inside of the arms/sides of your glasses and occasionally on the inside of the bridge (the part of your glasses that sits on your nose). It is usually written in the format: 52-17-135 Thankfully, it is easy to distinguish what these numbers refer to:
• The much higher figure (135) is the Arm Length.
• The middle figure (52) is easily identifiable as the
Eye Size (also known as Lens Diameter).
• The much lower figure (17) will be the Bridge
They do not need to be an exact fit but the nearer they are to your current pair, the more likely the glasses you buy from us will be a comfortable fit. Please note that the Arm Length is less important in determining a comfortable fit than the Eye Size and Bridge Size are.If you cannot identify any measurements (perhaps because they have worn away with time), you can either:1) Visit an optical shop and find a pair of glasses
that feel comfortable. Note down the
measurements (ask a staff member if you are
not sure) and come back to internetspecs.co.uk2) Measure your own glasses. Measurements are
in millimeters so you will need a millimeter ruler:
The minimum horizontal distance between the rims on a metal or plastic frame or the minimum horizontal distance between the lenses for rimless frames.
The eye size is the maximum horizontal width of either one of the lenses on your glasses.
Measure from the dowel point (the hinge area, where the arm connects to the main part of the frame) to the furthest point of the arm. This involves measuring to the bend and then measuring the drop separately. You can then add together the two measurements to get the final arm length.
What is my Pupillary Distance (or PD)? Your Pupillary Distance (PD) is the distance between your eyes, measured from the centre of one pupil to the centre of the other. Once we have your PD, we can then ensure that your lenses are made so that the centre of each lens lines up with the centre of your pupils. If you have a high strength prescription, (a sphere (SPH) reading higher than +/-3) a precise PD measurement is very important.
How can I find out my Pupillary Distance Measurement? Often, your optician will not include your PD measurement on your prescription so you can ask him/her after you have had your eyes tested or get in touch with him/her at a later date (see below on getting your PD measurement from a prescription).Alternatively, you can send an old pair of glasses to us and we can check your PD measurement from them. We will then send your glasses back to you (free of charge) with your new pair (unlike prescriptions, your PD measurement will not change much over time). If you are sending us your glasses, please tick the box found on our ‘Shopping Basket’ page and post them to the address found on our 'Contact Us' page (please include your contact details in with the glasses).If your prescription is not too high, (a sphere (SPH) reading between -2 and +2) we can make your glasses for you using an average pupillary distance measurement.You can also measure your PD yourself, although we recommend you have someone help you rather than use a mirror: • Place a millimetre ruler against your forehead
and the bridge of your nose • Line up the zero mark of the ruler to the centre
of one pupil • Read the millimetre measurement for the centre
of the other pupil • Repeat this 3 or 4 times for accuracyIf your glasses are for reading or computer work, the measurement for your PD is always slightly less than the 'distance' PD. If you are measuring your PD yourself, the measurement you get will be for 'distance'. If you require reading or computer glasses, please enter your PD for distance into our form and tell us in the 'Any Additional Information' box that you measured your PD yourself. We will then adjust the PD measurement if you've ordered glasses for reading or computer. If you don't write anything in the 'Any Additional Information' box, we will take the PD measurement you've entered into our form as the PD required for the specific glasses you have ordered.
Getting your PD Measurement if it is written on your Prescription If there are 2 PD measurements shown on your prescription, such as 63/60, this will mean that the 63mm figure is for distance use and 60mm will be your reading or computer PD.If you have just one PD, this will more than likely be your distance PD. You may want to confirm with your optician as there is the possibility this was written with reading or computer glasses in mind.Occasionally, your optician may write your PD for each eye, for example: 32/31. In this case, please write these figures into the 'Any Additional Information' box. The first figure is always the measurement for the right eye; the second figure, the measurement for the left eye.PLEASE MAKE SURE THAT THE PUPILLARY DISTANCE (PD) MEASUREMENT YOU WRITE ON OUR FORM IS FOR THE SPECIFIC PRESCRIPTION YOU WANT US TO MAKE - WHETHER IT'S FOR DISTANCE, READING OR COMPUTER. AN EXCEPTION TO THIS IS IF YOU'RE MEASURING YOUR PD YOURSELF (Please see above, towards the end of the section: 'How can I find out my Pupillary Distance Measurement?').
FRAME SIZE: Eye Size: 51 Bridge Size: 17 Arm Length: 135