Aim: The aim of the study was to compare the factors of pseudoaccommodation after phacoemulsification cataract surgery and monofocal IOL implantation among patients divided into two groups according to the possibility of good or poor pseudoaccommodation. The correlation and influence of AL, ACD, CDE, EFU, AST and corneal astigmatism on pseudoaccommodation were identified. Study type: Prospective cohort study. Patients and methods: The study included 30 patients of both genders who successively underwent ultrasound phacoemulsification cataract surgery. The best corrected visual acuity was determined to every patient on the day of the surgery and one month after the surgery. Every patient underwent keratorefractometry for astigmatism measurement, ultrasound biometry of the eye to measure AL and ACD, IOL power measurement before IOL implantation. One month after the implantation of monofocal IOL, uncorrected near visual acuity was assessed. Results: The study was conducted on 30 patients. Nineteen patients had good and eleven had poor pseudoaccommodation. Visual acuity after monofocal IOL implantation in both groups of patients was significantly better than before with median value 1.0. Patients with poor pseudoaccommodation had greater CDE than patients with good pseudoaccommodation, but the correlation was not significant. Analysing ACD and AL after phacoemulsification with pseudoaccommodation, in both groups of patients’ significant correlation existed, except in the group with long AL. The median of EFU was slightly lower in patients with good pseudoaccommodation, without significant correlation. The effect of IOL power on pseudoaccommodation was not statistically significant. Analysing type of astigmatism and power after phacoemulsification, in both groups of patient significant correlation was not detected. Conclusion: Visual acuity and ACD after phacoemulsification were significantly higher in patients with good and poor pseudoaccommodation. Factors like AL, CDE, EFU, AST, IOL power, corneal astigmatism and the increase in Morlet number didn’t influence significantly on pseudoaccommodation.