A 56-year-old woman presented with decreased vision and metamorphopsia in her left eye for 3 months. She received a diagnosis of stage 2 idiopathic macular hole in her left eye, which was made with a tomographic image of a full-thickness dehiscence of the neurosensory retina at the fovea. The posterior hyaloid membrane was adhering to the edge of the dehiscence. After a 6-month follow-up period, spontaneous resolution of the macular hole was observed with good visual recovery; all of this clearly demonstrated by optical coherence tomography. The posterior hyaloid membrane was fully separated from the fovea with restoration of almost normal foveal contour.