eyesight

I wonder between Samsung Galaxy Note 3, Sony Z Ultra and Nokia Lumia 1520 Which smartphone is the best for people with bad eyesight? I am planning to buy a smartphone for my younger brother-His eyesight is really bad.:-?

who has the eyesight of an eagle? There are two identical pictures that will appear on the screen. Almost 8000 people were tested to see if they could find the 3 differences and only 19 got it. See how observant you are and if you find all 3 differences, you are one of the most elite people...