Sjögren’s syndrome (SS) is an autoimmune epithelitis which usually presents with mouth and eye dryness. Although the place of systemic drugs in keratoconjunctivitis sicca treatment has been discussed, the efficacy of some topical drugs has also been demonstrated; however, there are contradictory results related to topical cyclosporine A. We aimed to investigate the efficacy of 0.05 % topical cyclosporine A in patients with keratoconjunctivitis sicca due to primary and secondary SS. This prospective study included 26 patients with a diagnosis of primary and secondary SS who visited our rheumatology outpatient clinic. Keratoconjunctivitis sicca was diagnosed in all patients after they were examined at the outpatient clinic. Patients were given topical 0.05 % cyclosporine A emulsions for both eyes. We used another 20 patients with SS who were treated with saline solution as a control group. Subjective symptoms reported after 1-week and 1-month follow-up were complaints of burning and pricking sensation, light sensitivity and pain. Objective signs included redness, Schirmer test and tear break-up time. A total of 26 patients (19 female) were enrolled in the study with a mean age of 47.5 years and mean disease duration of 5.2 years. In the first physical examination of patients, 23 patients had burning and pricking sensation, 24 had pain, 23 had light sensitivity, and 24 had red eyes. All subjective symptoms (burning and pricking sensation, light sensitivity and pain) were statistically significantly improved after 1-week and 1-month follow-up examinations (p = 0.0001). All objective signs (Schirmer test, tear break-up time, and redness) were statistically significantly improved after 1-week and 1-month follow-up examinations (p = 0.0001). Compared with the control group, there was significant improvement in all parameters. It is concluded that topical 0.05 % cyclosporine A is an effective treatment option for keratoconjunctivitis sicca due to SS after a 1-month follow-up period.