Can the Top of the Nose Be Widened?

I have made the best experience with temporal fascia.

Harvest can be through an incision in the hair bearing scalp and it is a very good grafting material for the nose.

I have also made very good experience with diced cartilage grafts, combined with fibrin glue and temporal fascia.

I avoid cartilage struts since the either absorb or may be rather palpable

Yes, the nasal bones can be widened at the inner canthal area by placing spreader grafts between the nasal bones.  This will involve medial osteotomies, harvesting septal cartilage to fashion the grafts, and inserting the grafts between the septum and nasal bones on each side to widen the nasal bones.