This is a prospective comparative interventional clinical study, that took place from January 2021 to November 2021. Twenty patients (20) were enrolled in this study 10 patients in each group. It was designed for comparison of uncorrected and best corrected distance and intermediate vision in patients whom implanted with monofocal Tecnis Eyhance or Tecnis 1-piece IOLs.

Purpose To determine the Uncorrected and best-corrected distance, and intermediate visual acuity in a new innovative monofocal intraocular lens compared with standard monofocal lens.

Methods This is a prospective comparative interventional clinical study, that took place from January 2021 to November 2021. 40 eyes of Twenty patients (20) were enrolled in this study, patients who are candidates for cataract extraction by phacoemulsification were included in this study and underwent thorough preoperative examination and post-operative evaluation at 3 months after the 2nd eye operation, of distance, intermediate, near add, contrast sensitivity and incidence of photic phenomena using a printed questionnaire for evaluating this incidence and binocular defocus curves were analyzed.

Inclusion Criteria:

• Patients aged 50-75 years old undergoing cataract surgery.
• Preoperative corneal astigmatism equal to or less than - 1.00 D.
• Availability, willingness and sufficient cognitive awareness to comply with examination procedures

Exclusion Criteria:

• Visual potential of less than 0.63 due to ocular pathologies.
• Corneal astigmatism over -1.00 D cylinder.
• Pupil abnormalities (non-reactive, tonic pupils, abnormally shaped pupils, or pupils that do not dilate at least 3.5 mm under mesopic/scotopic conditions).
• Capsule or zonular abnormalities that would affect postoperative centration or tilt of the lens and pseudoexfoliation syndrome.
• Macular degeneration, cystoid macular edema,Diabetic retinopathy, history of uveitis, optic nerve diseases, glaucoma and amblyopia.

the data of the patients are kept in files with the principal investigator