Aloha Realize,
I've worked with some systems where they always keep their eyes relaxed, soft focused, and slightly open for everything.
As Zakyrus mentions, do what works for you. Master Lin has students close their eye, to help minimize their visual distractions. He mentions to open them during the Seven Steps of New Life, only because of a balancing issue that can be present and bring the students out of the relaxed mediation they were in for the first set of exercises.
Much Love,
Shawn