Visual and Refractive Outcomes After Implantation of Aspheric IOLs With Different Dioptric Increments and Manufacturing

A Randomized Fellow-eye Controlled Clinical Trial to Compare the Visual and Refractive Outcomes Between Two Aspheric IOLs With Different Dioptric Increments and Manufacturing Tolerances in Patients Undergoing Bilateral Cataract Surgery

This study compares two intraocular lenses, the Softec HD and the Tecnis Z9002, used to replace the natural crystalline lens after cataract extraction. The variables compared include 1) the accuracy of targeted versus achieved refractive outcomes and 2) visual acuity outcomes three months after implantation.

Inclusion Criteria:

• operable cataracts in both eyes
• require intraocular lenses (IOLs) in dioptric range from 18.0 diopters to 25.0 diopters in both eyes
• </=1 diopter (D) of regular astigmatism in both eyes

Exclusion Criteria:

• Intraocular surgery or laser treatment prior to cataract surgery
• Severe dry eye
• Presence of ocular infection
• Uncontrolled intraocular pressure (IOP) or glaucoma preventing a postoperative best corrected visual acuity (BCVA) of 20/25 Snellen or better
• Retinal or macular pathology preventing a postoperative BCVA of 20/25 Snellen or better
• History of retinal detachment
• Corneal decompensation
• History of corneal disease (e.g., herpes simplex, herpes zoster keratitis, etc.)
• Clinically significant corneal endothelial dystrophy (e.g., Fuchs' dystrophy)
• Amblyopia preventing a postoperative BCVA of 20/25 Snellen or better