This is a case series of 3 patients who presented with periocular changes in the treated eye following chronic administration of unilateral latanoprost 0.005%. The clinical changes included worsening of dermatochalasis, deepening of superior sulcus and hollowness of the lid. This similar observation was previously described in usage of bimatoprost 0.03% and travoprost 0.004%. However this has not been reported in latanoprost instillation. Therefore, patients should be made aware of these potential side effects.