Advantages* For some people, contact lenses can provide better vision than eyeglasses.* Contact lenses are more comfortable than thick, heavy spectacles. * 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. * Contact lenses are not affected by perspiration. * Contact lenses are less costly than spectacles. * There are fewer lost contact lenses than spectacles. Disadvantages* Dust or grit can possibly get trapped under hard contact lenses.* Some solvents can interact with materials of both hard and soft lenses. * Lenses may discolor or cloud up when exposed to certain chemicals. * Soft lenses can dry out in winds and dry areas. * Some vapors and gases can be absorbed in lenses and cause irritation and damage. * Some contact lenses prevent O2 from reaching the eyes. * Contact lens workers are at greater risk when working alone. |