Contact lenses provide better peripheral vision than eyeglasses. Contact lenses do not fog up like glasses when the wearer goes from warm to cold areas. New lenses fit snugly on eye, reducing the likelihood of particles getting underneath them. Contact lenses can provide a barrier to various gases and aerobic particles. Contact lenses are better than glasses in humid atmospheres.
Contact lenses are better for work that involves optical instruments.
Protective eyewear fits better over contact lenses than over eyeglasses. No dangerous shards of glass form in accidental falls or trauma. Soft UV-absorbing lenses protect the cornea from optical radiation. Contact lenses are better in rain and mists. Contact lenses do not have the problem of glass lens reflections.