Objective To test the contrast sensitivity (CS) of patients with excellent visual acuity after rhegmatogenous retinal detachment (RRD) surgery,and to analyze whether retinal detachment involving or not involving the macula is correlated with contrast sensitivity.Methods It was a retrospective case-control study.A total of 50 RRD patients (50 eyes) whose postoperative best corrected visual acuity (BCVA) was 4.9 or better than 4.9 on a standard logarithmic visual acuity chart were enrolled.Patients were divided into a group with macular involvement (n=20) and a group without macular involvement (n=30) based on preoperative optical coherence tomography exams.Thirty normal eyes were enrolled as a normal control group.Contrast sensitivity with and without glare was tested with CSV-1000E.Single factor analysis of variance was used to compare BCVA and CS at each spatial frequency for the 3 groups.A LSD t test was used for further comparison of the 3 groups.Results The difference in BCVA for each of the 3 groups was not statistically significant (F=2.200,P＞0.05).The CS values with and without glare were higher for the normal control group than for the groups with and without macular involvement (F=12.577-45.438,P values all＜0.01).The CS values with glare at 18 c/d spatial frequency for the group without macular involvement was higher than that for the group with macular involvement (0.87±0.23 vs 0.69-±0.33,t=2.418,P＜0.05).However,there were no statistically significant differences at any other spatial frequency between the 2 groups.Conclusion Although some patients with RRD can have excellent visual acuity after surgery,contrast sensitivity may not be restored to normal levels.The CS values with glare at 18 c/d spatial frequency for the goup with macular involvement were lower than that for the group without maeular involvement.