Aim of the study: The aim of the study was to examine whether patients with anterior ocular surface disease after cataract ultrasound have less visual acuity compared to one with a normal anterior ocular surface finding. Study structure: Prospective cohort study Subjects and Methods: The study included 60 patients of both genders with cataract, who underwent ultrasound phacoemulsification cataract surgery. Each patient was determined by age and sex, and underwent slit lamp examination of the eye, fluorescein test, TBUT, visual acuity was determined on the day and 30 days after the surgery, the difference in measured tear film and visual acuity was also checked. All patients underwent surgery by the same sur-geon and had an intraocular monofocal lens implanted. Group 1 (control group) was represen-ted by people with a normal ocular surface and normal tests before surgery. Group 2 consisted of those who had one or more altered tests. Results: After surgery, visual acuity improved significantly in both groups with a median of 1.0 in both groups (Wilcoxon test). There were significantly more positive results of the fluo-rescein test after surgery in both groups (Wilcoxon test). The tear break up test values were worse in the control group after surgery, with a median of 8 seconds, and in group 2 there were no significant differences (Wilcoxon test). There is no significant difference in the de-velopment of blepharitis before and after surgery. There is a significant correlation between visual acuity and total US energy entered into the eye. Conclusion: Visual acuity improved after surgery. The finding of the tear film worsened, and the operation did not affect the finding of blepharitis. The higher cumulative dissipated e-nergy (CDE) used during surgery adversely affects visual acuity.