AIM: To assess the effects of upper lid blepharoplasty on visual quality. METHODS: Seventy-three eyelids of 39 patients were subjected to upper lid blepharoplasty. Pre- and post-operative contrast sensitivity, visual acuity, vertical palpebral aperture and the degree of lash ptosis were measured. RESULTS: The mean log contrast sensitivities under photopic (P=0.017) and scotopic conditions (P=0.009) were improved after surgery, and these differences were significant. The degree of lash ptosis was also decreased after blepharoplasty (P<0.001). CONCLUSION: In our study, a significant increase in contrast sensitivity was found after surgery. These results suggest that upper lid blepharoplasty can be helpful for improving visual quality.