1. Employing groundbreaking techniques in alternative medicines, the patient's health improved in a few days.
As per Manhattan SC, the correct form is:
Employing groundbreaking techniques in alternative medicines, the doctors saw the patient's health improve in a few days.
I know step 1 is dealing with dangling modifiers. So, we need doctors. But, for the step 2, I am still not convinced with the reasoning. There has to be some reason why the second verb need not be in past tense or when and Why we donot need to follow the ||sm b/w the verbs.
If this is a case of Superficial Parallelism then I dont think IMPROVE (subordinate verb) is giving additional info on SAW (main verb).
Experts please explain.