Hey everyone! I am brand new to OptiBoard and was wondering if anyone could help. I am currently scheduled to take the SC state board exam this december and I am just a little fuzzy on a few things. I have gathered some great info from openoptix. If anyone has more info they can send that would be great. Especially around resultant prism, thick lens equations, focal length, vertex distance, slab off, SC state laws, Ansi Standards, etc. I am familliar with most of this but the more info and study materials, the better. Thanks, -Mike