FITTING PRESCRIPTION LENSES INTO THE COVIDI INSERT

Any qualified optical store should be able to fit prescription lenses into our inserts.

We always recommend visiting an optician and consulting a professional about the most suitable lenses for your prescription.

In general, plastic lenses (CR-39, polycarbonate, or Trivex) with anti-reflective coating and hard coating are the best option.

We do not recommend using mineral (glass) lenses.

If you are unable to find an optician willing to fit the lenses, please contact us and we will help you find a solution.
You can also send the insert to us, and we will arrange lens fitting in cooperation with Optika Policar.

FOR OPTICIANS

If a customer brings a CoVidi insert to your optical store, here are a few recommendations for fitting lenses:

1) Material and handling

The inserts are manufactured using 3D printing from Nylon 12.
They can be handled similarly to milled acetate frames, but require more heating and controlled cooling.

They can be heated and adjusted using an optical hot air heater.
Open flame heating is not recommended.

2) Lens insertion

Lenses must be inserted from the back side, not from the front as with standard frames.

Due to the flexibility of the material, the lenses need to be pressed firmly into the insert.

3) Lens type

We recommend using plastic lenses only.
Mineral lenses are not suitable due to the intended use inside a mask.

4) Centration

We recommend performing centration with the insert mounted inside the mask directly on the user's face.

Please take into account the adjusted vertex distance when calculating the prescription.

5) Comfort adjustment

If the insert causes pressure inside the mask, we recommend gently reshaping the bridge area after heating.

6) Support

If you have any questions regarding edging or centration, please contact us.