It is a detailed picture of the professional contact-lens refitting process which is a professional and necessary operation. With the magnification and brightness of the biomicroscope, or slit lamp, an optometrist carefully examines the health of the eye surface, and the movement and perfect fitting of a trial lens. This is much more than an ordinary prescription of glasses. The procedure makes sure that the lens material, various curvature and diameter is exactly matched to the individual cornea shape and tear film and that discomfort and desiccation do not happen or that harm may occur subsequently. The right fit will be the key to the best vision, maximum comfort and durability of ocular health which will make the contact lens not just a vision enhancement device but an easy safe addition to everyday life.