First of all, it is important to take into account the different shapes of screen for masks. Since they have their own specificity, it is important to choose a mask that offers optimal vision according to your preferences.
Cylindrical shape
A flat screen that distorts the landscape as little as possible. Although it offers clear, undistorted vision, this type of mask offers more limited peripheral vision than the spherical mask.
![](https://www.cebe.com/img/cms/BLOG CEBE/Cylindrical-lens-FR.jpg)
Spherical shape
A curved screen that adapts to the shape of the retina and offers an enlarged field of vision and improves the perception of reliefs.
![](https://www.cebe.com/img/cms/BLOG CEBE/Spherical-lens-FR.jpg)
OTG Mask
(Over The Glasses) This one allows you to keep your glasses under your ski mask. All this without compressing or moving them.