There is definite contraindication in the harbour of contact lens in the mountain nor by big colds, although there are some exceptional cases of lenses having frozen on the eye in these conditions. Nevertheless, you should not forget some rules and some advice. Let us note first of all that it is imperatively necessary to take the opinion of his ophtalmologiste before changing type of lenses for the time of a stay in the mountain. It is not possible to cross monthly lenses to daily lenses of the same mark without knowing if their geometry is adapted to the eye. Within the same range, there are not similarities of lenses the rays of curves, thicknesses and diameters can vary.

It is necessary to disadvise the harbour of rigid lenses; not very stable, they risk throwing in the slightest a bit violent shock during some activities such as the ski. It is indeed very "unpleasant to lose a lens in the snow on the occasion of fall

Soft lenses, distinctly more stable, generally do not have this disadvantage when they are adapted well, but they ask for more maintenance.

The daily lenses or in extended harbour constitute a good alternative in case of stay in the mountain in conditions (stay in dormitories, studio cabin, etc.) not allowing a sure and ideal manipulation of lenses.

The solar tinted lenses exist but are not much used. Besides, these lenses do not protect the conjunctive, who can be corrupted by UV in the same capacity as cornea.

It is the reason for which it is necessary to link the harbour of not corrective solar glasses to the optic correction assured by lenses, whatever it is.

Finally, by cold and sunny time, air is often dry. This weak degree of hygrometry, sometimes linked to the wind, can be responsible for dryness of lenses and of corneas. It results from it a feeling of lack of comfort and/or of hyperh mie conjonctivale, increased in case of deficient protection vis vis of UV. The use of mouillants eyewashes is then desirable. But this one is by difficult time, because it is necessary to transport these eyewashes without their freezing. You should not therefore hesitate either to come back to a correction by corrective solar glasses there.