Oxygen is a vital element for ocular health (safety is increased by its   passing through the material);
 They are smaller and do not totally cover the cornea, allowing it to   breathe;
 Teardrops flow easily between the lens and the eye;
 Risks of infection or allergy are reduced to minimum (any incident is   immediately felt to be an alarm signal which calls for removal of the   lenses);
 Improved quality of vision, in many cases markedly slowing down the   progression of the child´s short-sightedness.