Even though in many cases keratoconus simply cannot be prevented, there are some measures one can apply to try to prevent the condition.
For example, one should be careful when rubbing his/her eyes. Vigorous rubbing (especially if it is performed each and every day) may damage the cornea and eventually lead to keratoconus. The actual connection between vigorous rubbing of the eyes and keratoconus has not been proven but this still may be a potential cause of keratoconus.
Rigid contact lenses are made of hard materials. If one wears this type of contact lenses, it is essential to pay close attention when using them. They should fit properly and if there is ill-fitting of any kind, the person should consult his /her ophthalmologist.