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Prescription moisture chamber glasses

Most of the moisture chamber glasses and windproof eyewear that we sell are designed to accommodate prescription lenses, up to specified limits.

You can either get prescription lenses fitted to our frames by your optician or by an optical reglazing company. There are a number of online reglazing services such as Reglaze Glasses Direct (previously called Ciliary Blue) that offer competitive rates. Most large towns usually have at least one optical reglazing service. Reglaze Glasses Direct can be contacted on 01455 293417.

How to get your moisture chamber prescription glasses:

  1. Check that your prescription is within the advised limits for your chosen frame. If you are uncertain, check with your chosen optical reglazing company.
  2. Buy your 7eye AirShield, Ziena or Body Specs glasses from us with non-prescription lenses in order to check that your chosen model fits you well.
  3. Place your order with your chosen reglazing company for prescription lenses.

Dealing in person with an optical reglazing company

You may find that the best approach for getting your lenses fitted is to contact your nearest optical reglazing company and go in person to to see them, taking the frames round to them.

This enables them to confirm that they can fit your lenses to your selected frames. They can make adjustments to the fit and mark up the lenses with your varifocal heights, if required.

We recommend this personal approach as it gives you more reassurance that the lenses will be made to your requirements, and you have more comeback if you are not satisfied with the finished lenses.

    Please ensure that you have read and understood our returns/refunds policy in relation to frames which you are intending to have fitted with prescription lenses. 

    How to understand your optical prescription

    Optical prescription documents follow a consistent format. Normally the Right eye is shown first (sometimes denoted as OD) then the Left eye (OS).

    The prescription for each eye is divided into Sphere, Cylinder, and Axis values. It is common to have no values for any one of these, in which case you might see the letters PL or plano, or to have values for all of them. Sometimes the prescription may show OU, which means both eyes.

    SPH (Sphere)

    This is a distance correction. If you are short sighted, the SPH will have a minus sign in front of it. If you are long sighted, it will have a plus sign.

    CYL (Cylinder)

    You will only have a cylinder value if you suffer from astigmatism.


    Your prescription will show the related Axis value (in degrees) if you have a CYL measurement.

    Bifocal and Varifocal prescriptions

    If you have a bifocal prescription, you will have a separate measurement for Distance and Near vision, and on a varifocal prescription there will also be an Intermediate distance value.

    Pupillary Distance (PD)

    Pupillary Distance is the distance in millimetres between the pupils of your eyes. Adult PD averages 60 millimetres (mm) for women, and 64 mm for men.

    An accurate pupillary distance (PD) is an essential measurement in order to make prescription lenses, and you cannot purchase glasses online without one. The higher the lens power in your prescription, the more important it is to use an accurate PD measurement.

    If your PD is not shown on your prescription, you can obtain it from your optician, or Reglaze Glasses Direct can determine it accurately if you send them an old pair of your glasses (your PD does not change over your adult life).