there is provided a spectacle frame 1 , having a least one corrective lens the characteristics of which do not vary over time and having telemetry means 5 which set off an alarm 9 , 10 when the distance measured by the telemetry means is less than a predetermined preference distance . this reference distance can for example be set at between 20 and 50 cm depending on the spectacle wearer . a kit is also provided comprising a frame , telemetry means and an alarm . the spectacle frame can be prescribed for slowing down the evolution of acquired myopia in children who are starting to acquire myopia ; here , the spectacle frame is provided with progressive multifocal lenses . the telemetry means and alarm incite the child to respect a sufficient working distance for close vision .