Orellana et al4 examined the vitreous cysts by electron microscopy and detected predominantly large mature melanosomes associated with scattered immature ones (premelanosomes); they hypothesized that the origin of the cysts was from pigment epithelium secondary to trauma. Later, on histopathological examination, Nork and Millecchia5 detected pigment epithelial–type tissue with immature melanosomes (not seen after birth in normal pigment epithelium), Mittendorf dot, and position at the Cloquet canal, all of which favored the hypothesis of a choristoma of the primary hyaloidal system. The therapeutic approach to a vitreous cyst depends on the severity of the symptoms, the cyst's characteristics and location, and the patient's desire for treatment. Most cysts in the vitreous cavity may be observed and followed up without any intervention. Treatment consists of either laser disruption of the cyst or pars plana vitrectomy with cyst excision.5,6 In our case, the cyst was followed up for 1 year without any increase in the size of the cyst or any other complications. It is therefore very important to differentiate these idiopathic vitreous cysts clinically from other infectious and malignant conditions to avoid unnecessary aggressive treatments. As described in our case and in the literature,2 they can be safely observed for long periods without any complications.