Suus eius

[john abshire]

In hac via Cicero medicum eius vidit, non suum.
on this road, Cicero sees his doctor, not his own.

i’m sure there is a significant difference in meaning between suus and eius, but I can’t find it.
??
edit: in red

 

[Pacifica]

The last word should presumably be suum.

Eius means "his" as in some other person's before mentioned in the context, while suus means his own.

 

[Pacifica]

Also, in hac via would better translate as "on this way/road", rather than "in this way". "In this way" sounds like "in this manner", and that's not what the Latin means.