Corrected entry: They continue to show the effects of the radiation slowing the ageing of the planets' population and making the entire enterprise crew feel younger, and I believe there was a statement about old scars healing. Now that's fine enough but Geordi was born blind, as explained in one episode. He was not blinded in a accident or anything like that. Reverse ageing should have no effect on his eyes because he never had them in the first place so therefore nothing to regenerate.
Spaceboy_007
7th Dec 2005
Correction: It is not simply reversing the ageing process: it is healing the body. It just happens that a person's prime physical condition comes in that 18-25 years old range. Geordi's optic nerves never reached his eyes and "healing the body" would fix that.
Rlvlk