contact lens

Contact lenses are considered as one of the good advancements over spectacles. Nowadays the usage of this contact lens has increased greatly owing to the availability of cheap contact lens available throughout the world. But most of the people prefer disposable contact lens as it is easy to use. But there are certain complications associated with over usage of contact lens. The problems may regarding eyelid, cornea etc. Also when we compare contact lens with spectacles the former is more advantageous.