Prospective Evaluation of Visual Outcomes With Tecnis One-Piece Multifocal Intraocular Lenses Compared With Patients Previously Implanted With Crystalens Aspheric Optic (AO)

Inclusion criteria

• Key Inclusion Criteria for Part 1:

• Age 18 or greater
• Bilateral cataracts for which phacoemulsification extraction and posterior IOL implantation has been planned for both eyes
• Visual potential of 20/30 or better in each eye after cataract removal and IOL implantation
• Preoperative best-corrected distance visual acuity (BCDVA) worse than 20/40 Snellen
• Naturally dilated pupil size (in dim light) > 3.5 mm (with no dilation medications) for both eyes
• Preoperative corneal astigmatism of 1.5 D or less
• Clear intraocular media other than cataract
• Availability, willingness, and sufficient cognitive awareness to comply with examination procedures

Inclusion criteria

for Part 2

• At least 18 years of age
• Underwent bilateral implantation with Crystalens AO at least 6 months previously
• Visual potential of 20/30 or better in each eye after cataract removal and IOL implantation
• Preoperative best-corrected distance visual acuity (BCDVA) worse than 20/40 Snellen
• Naturally dilated pupil size (in dim light) > 3.5 mm (with no dilation medications) for both eyes
• Preoperative corneal astigmatism of 1.5 D or less
• Clear intraocular media other than cataract
• Availability, willingness, and sufficient cognitive awareness to comply with examination procedures

Exclusion criteria

• Key Exclusion Criteria for Part 1:

• Use of systemic or ocular medications that may affect vision
• Acute or chronic disease or illness that would increase risk or confound study results (e.g. diabetes mellitus, immunocompromised, etc.)
• Subjects with diabetes mellitus
• Uncontrolled systemic or ocular disease
• History of ocular trauma or prior ocular surgery
• Amblyopia or strabismus
• Known pathology that may affect visual acuity; particularly retinal changes that affect vision (macular degeneration, cystoid macular edema, proliferative diabetic retinopathy, etc.)
• Diagnosed degenerative visual disorders (e.g. macular degeneration, or other retinal disorders) that are predicted to cause future acuity losses to a level of 20/30 or worse
• Patients with forme fruste keratoconus or keratoconus
• Subjects who may be expected to require retinal laser treatment or other surgical intervention
• Capsule or zonular abnormalities that may affect postoperative centration or tilt of the lens (e.g. pseudoexfoliation syndrome)
• Pupil abnormalities (non-reactive, tonic pupils, abnormally shaped pupils, or pupils that do not dilate at least 4.0 mm under mesopic/scotopic conditions)
• Contact lens usage within 6 months for PMMA contacts lenses, 1 month for gas permeable lenses or 1 week for extended-wear and daily-wear soft contact lenses
• Requiring an intraocular lens <15.0 or >26.0 diopters

Exclusion criteria

for Part 2

• Diagnosed degenerative visual disorders (e.g. macular degeneration, or other retinal disorders) that are predicted to cause future acuity losses to a level of 20/30 or worse
• Patients with forme fruste keratoconus or keratoconus
• Subjects who may be expected to require retinal laser treatment or other surgical intervention
• Capsule or zonular abnormalities that may affect postoperative centration or tilt of the lens (e.g. pseudoexfoliation syndrome)
• Pupil abnormalities (non-reactive, tonic pupils, abnormally shaped pupils, or pupils that do not dilate at least 4.0 mm under mesopic/scotopic conditions)
• Requiring an intraocular lens <15.0 or >26.0 diopters Exclusion Criteria for Part 2
• Diagnosed degenerative visual disorders (e.g. macular degeneration, or other retinal disorders) that are predicted to cause future acuity losses to a level of 20/30 or worse
• Patients with forme fruste keratoconus or keratoconus
• Subjects who may be expected to require retinal laser treatment or other surgical intervention
• Capsule or zonular abnormalities that may affect postoperative centration or tilt of the lens (e.g. pseudoexfoliation syndrome)
• Pupil abnormalities (non-reactive, tonic pupils, abnormally shaped pupils, or pupils that do not dilate at least 4.0 mm under mesopic/scotopic conditions)
• Requiring an intraocular lens <15.0 or >26.0 diopters