Really? Wow!! As someone both w/a degenerative eye disease and Family Members dealing w/vision issues/diseases, hearing about this use for a smart phone is awesome. For an Organization like say...Doctors Without Borders, who practise in the Third World or even Doctors in Rural Areas like the Canadian Arctic, where they aren't able to access the equipment needed in order to do even the most basic of eye testing for some of the most common eye diseases, this is beyond huge. It's going to help so many people in the future.
Is this part of the Vision 2020 charity/foundation/program Sophie is the Patron of? Even if not, it doesn't surprise me at all Sophie will be spending such a milestone Birthday trying to bring attention to the advancements in the fight against Blindness/Vision Loss. After all, this is not just an important cause worthy of the support of Members of the BRF, but as we all know also a deeply personal one for TRH too.
As I said to my Aunt and Mom once, both are dealing w/Macular Degeneration, Sophie and Edward are *our* BRF Members and I look forward to lifting a glass of Ginger Ale in the direction of the UK in honour of HRH's 50th next week.