The U-SPECS (universal spectacles) can be used by everyone, but is primarily meant for children in developing countries. It is easy to use: simply adjusting the knob on the spectacles changes the refraction for each eye from -6 diopter to +3 diopter. Because the focus of the glasses can be adjusted, no optician is needed and the cost for the adjustable glasses is less than 4 euros. The concept of these adjustable spectacles was developed at the VU University Medical Centre in Amsterdam, The Netherlands

One of the latest prototypes of the U-specs.

 

      

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