The contact lens is medical equipment in the form of a lens used as a corrective or cosmetic measure which is placed on the cornea of the eye. They usually serve the same therapeutic purposes as spectacles, but their advantages include being of light weight and also being virtually invisible to others. However, some contact lenses are purposely colored to change the appearance or the color of the eye. According to research, it is estimated that nearly one hundred and twenty five million people all over the world, now use contact lenses, with at least twenty eight million people in the United States alone.
People might choose to wear contact lenses over the use of spectacles due to many practical reasons. Continue reading
