<p>The present invention relates to: an optical anisotropic film capable of more effectively aligning liquid crystals of a liquid crystal layer by using a photoalignment layer and showing remarkable liquid crystal alignment stability and excellent interaction between a liquid crystal layer and a photoalignment layer; and an optical device comprising the same. The optical anisotropic film comprises: a substrate having a polarity (P) defined by the predetermined equation of 0.01-0.35; a photoalignment layer on the substrate in which at least a part of photoreactors comprise a photoaligned photoalignable polymer and said P is 0.02-0.28; and a liquid crystal layer on the photoalignment layer.</p>
