Selection of Aspheric Diffractive Multifocal Intraocular Lens (IOLS) Based on Corneal Wavefront

Inclusion Criteria:

- 18 years of age or older

- Scheduled to undergo bilateral cataract or refractive lens surgery

- Visual potential of 20/30 or better in each eye after lens removal and IOL
implantation

- Naturally dilated pupil size (in dim light) > 3.5 mm (with no dilation medications)
for both eyes

- Preoperative regular corneal astigmatism of 2.5 D or less

- Clear intraocular media other than cataract

- Availability, willingness, and sufficient cognitive awareness to comply with
examination procedures

Exclusion Criteria:

- Ocular disease other than cataract which could potentially limit uncorrected visual
acuity or visual performance.

- Astigmatism not correctable by limbal relaxing incisions (greater than 2.5 D)

- Use of systemic or ocular medications that may affect visual outcomes

- Acute or chronic disease or illness that would increase risk or confound study results
(e.g. diabetes mellitus, immunocompromised, etc.)

- 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 worse than
20/30

- 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 or abnormally shaped pupils)

- Contact lens usage within 6 months for PMMA lenses, 1 month for gas permeable lenses
or 1 week for extended-wear and daily-wear soft lenses

- Requiring an intraocular lens power <15.0 or >26.0 diopters