In uk.d-i-y, T i m wrote:
When I first started using 1.5's for semi regular reading etc the
3.25's made me giddy and dis-orientated. I can now deal with them
much easier but anything more than .5m away is blurred. Not tried any
5's yet .. might pop in and see if they have any tomorrow. ;-)

You can always wear two pairs. I wear two 1.5s when one isn't enough.
And 1.5 + 3.25 = 4.75: worth a try.

--
Mike Barnes