What do you call the sunglasses that you get after getting your eyes dilated at the eye doctor?

"Post-mydriatic": Mydriasis is pupillary dilation and without pupillary constriction, bright lights can dazzle you or even cause a temporary bleaching of the retina. Pharmacologic dilation for diagnostic testing and examination can last 3 or more hours, depending on the drops used and the color of your eyes, with lighter colors lasting longer. The near vision is typically more impaired than the distance.

Roll up sunglasses: You're probably talking about the roll up sunglasses made by "Lenscovers."