Monolateral idiopathic cyst of the vitreous

Purpose: The authors describe the case of a 58-year-old female patient that came to their observation for recurrent episode of transient blurred visio n due to an idiopathic monolateral vitreal cyst localised in the posterior vitreous in the left eye. Methods: Patient evaluation included: best corrected visual acuity, slit-la mp examination, vitreo-retinal biomicroscopy, ultrasound examination, ultra biomicroscopy, fluorescein angiography. Conclusions: The authors review the literature including the most recent re ports regarding this rare condition.