What is better PRK or SMILE in the presence of mild Dry Eye?

Professor Dan Reinstein analyses the science behind the myth that PRK is better than lamellar surgery for an ocular surface that is somewhat dry.
Presented at the Taiwan Ophthalmological Society meeting 2021

[@waltersteyger1215]

What annoys me is that PRK is mentioned the first minute and after that there is only spoken about Smile and Lasik. So I still do not know how to compare Smile vs tPrk

[@vroberts6538]

What are the parameters of "mild" dry eye? When would dry eye be considered "moderate"?