[@Renose]
There is currently no medicine or surgery that can do anyhting for Retinitis Pigmentosa, as it's a condition where the "yellow spot" in your eye keeps "falling apart". And modern medicine can't fix/stop that, really.

And you're welcome. To be specific, the two ways you usually use a cane is:

Tapping: What Ryuuichi is doing is the usual method of walking around in crowded or populated areas. The tapping is more meant to cause noise and draw peoples' attention to the user, so they can get out of the way or be aware that a person with bad eyes is around.

Sweeping: Rolling the cane across the ground infront of you, in a back-and-forth arc/pendulum motion, is done to get more information out of the ground infront of you, and make you notice things like pavement ledges, dips/holes in the grounds or where there're crosswalks and the like.

And yes, if Ryuuichi hadn't had the Rotom with her, chances are she [i]might've[/i] gone up and checked on him.

[b]EDIT:[/b]

And awww, the Ralts is really cute. :3