I have the same confusion as on the back of the medical request form they sent to me, it says to bring 2 passport size photos but dimensions were not mentioned.
The Canadian passport photo size is 50X70 mm while immigration photos is 35X45 mm.
Since they mentioned "passport size", I decided to go with 50X70mm.
I am doing the medical in Canada.
Guys, please let me know if you have another thought.
Thanks!