FIBER OPTICS 100 UDS (2M) - FIBRE OPTIC EM.3346 200 UDS (2M) - FIBRE OPTIC EM.3354 400 UDS (4 M) - fiber optic Sets EM.3357 that change color throughout its length. Constant color changes favor the attention and focus of the user and are particularly useful for people with visual disabilities because they provide a large visual stimulus. You need a light source for operation. Multisensory stimulation helps you use the senses intact and residual skills remaining in the damaged senses. This stimulation will vary depending on the overall condition of the child and their level of involvement. Fiber optics can define a space and making the rules may change as a passage, "dressing" with her, as a scarf, etc. Suggested activities with fiber optics: observe, touch, manipulate it (is recommended for those users who are hyperactive as it has calming effect it is advisable not bite or suck..