Fig. 1

a Optical coherence tomography of right eye before latanoprost administration. No pathology is detected. b Seven months after treatment with preservative free latanoprost optical coherence tomography in right eye revealed cystoid macular edema with well-defined, intraretinal cystic areas of low reflectivity in the macula with serous retinal detachment. c Two months after latanoprost discontinuation optical coherence tomography demonstrated complete resolution of cystoid macular edema. A subtle epiretinal membrane is noted