FIG. 3. Optic disc photograph and SD-OCT of NAION in the acute stage. (A) The optic disc photograph shows optic disc swelling and hemorrhage in right eye. (B) SD-OCT shows a large optic disc area, increased vertical disc diameter and diffuse thickening of the peripapillary RNFL. (C, D) The OCT shows thinning of GCIPL thickness prior to thinning of RNFL thickness of right eye at 1 month after NAION.