The textured surface typically faces inward as to not get dirty. The functionally will not change regardless of the way the textured surface faces.
Does prismatic sheet change color under high heat?
If prismatic sheet is used in a skylight, the material may become hazy at temps over 100 degrees. However, once it equalizes between 60-80 degrees, the sheet returns to clear. The haze typically isn't noticeable because of the texture surface.