Making of contact lenses
First, special contact lens plastic polymer is molded or cut so that the polymer will attain the shape of a contact lens. A contact lens machine is used for molding. This machine converts the melted plastic polymer into contact lens form with the help of a curved contact lens mold and later strong pressure gives the contact lens shape to the contact lens form. The curvy shape of the mold imparts the required degree of curve to the lens so that it lies comfortable on the eye. Then, a special grinding process makes the contact lens edge smooth and shiny. Another method to make contact lenses is by using a laser to cut and slice the plastic polymer into a contact lens shape. Later, a diamond polisher process makes the contact lens edge smooth and shiny.