Quote Originally Posted by willystylle
Are there any?

I've noticed that I only get red-eye when I smoke Sativa strains. Indica strains have no effect on my eyes. The same applies to my speech, coordination, etc. Anyone else noticed this? Or could it be a biological thing?
Leave it to good, old Erowid.
http://www.erowid.org/plants/cannabi...is_info6.shtml

Although, that link, I'm not sure, will answer your question.