Comparative Study of Two Multifocal Intraocular Lens With Different Add Power

This study will compare cataract patients with implantation of diffractive multifocal IOL with an additional power of +2.75 diopters (Group 1) and with +3.25 diopters (Group 2). Evaluations will be performed 1 and 3 months following cataract surgery, including measurement of uncorrected distance visual acuity (UDVA), refractive error (manifest refraction [MR]), and uncorrected near visual acuity (UNVA) at 33, 40, and 50 cm. At 3 months, internal aberrations and contrast sensitivity will be evaluated and subjects will complete a questionnaire on outcomes satisfaction, visual symptoms, and spectacle use.

Inclusion Criteria:

• age >= 18
• cataract patients with lens opacities classification higher than grade III
• patients who desire to be spectacle indepence for distance and near vision

Exclusion Criteria:

• previous ocular surgery or trauma
• presence of corneal opacities
• fundus abnormalities
• glaucoma
• uveitis
• amblyopia
• systemic disease
• posterior capsule rupture during cataract surgery