A method of treating onychomycosis is described which includes administration to an infected area around a nail of a patient a tissue softening composition containing urea and an antifungal composition in one or separate compositions, concurrently or non-concurrently. The system includes a coordinate creating module, a census transform module, a delay XOR calculation module, a stereo matching module, and a control module. The yoke portions and the ring are formed in corrugated shape to mesh with each other, and the stoppers are formed with projections that engage with the inner side of the ring. To solve the problem of the invention the fibres or chips are in particular first dried and then glue is mixed with the dried fibres or chips at temperatures lying substantially below the drying temperatures and in fact in particular below 100 C. The plurality of column-like elements abut against one another in a second direction different form the first direction so as to form a light exiting surface of the enhanced prism film with converging effect in both the first and second direction.