Clinical Evaluation of Low Contrast Visual Performance and Low Light Phenomena in Patients With Various Intraocular Lens Implants

Inclusion Criteria: * Minimum 22 years of age * Bilateral pseudophakia, at least 3 months postoperative from IOL implantation, with one of the study IOL models in at least one eye. * Availability, willingness, and sufficient cognitive awareness to comply with examination procedures * Signed informed consent and HIPAA authorization or equivalent documentation necessary to comply with applicable privacy laws pertaining to medical treatment in the governing countries * Ability to understand and respond to a questionnaire in English Exclusion Criteria: * Any clinically significant pupil abnormalities (non-reactive, fixed pupils, or abnormally shaped pupils. * Inability to focus or fixate for prolonged periods of time (e.g., due to strabismus, nystagmus, etc.) * Uncorrected distance visual acuity worse than 20/25 in either eye * Prior corneal refractive surgery (LASIK, LASEK, RK, PRK, etc.) or intraocular surgery. Note: Prophylactic peripheral iridotomies and peripheral laser retinal repairs that, in the opinion of the investigator will not confound study outcomes are acceptable. * Posterior capsular opacification with grading worse than 1+ * Ocular findings that may, in the opinion of the investigator, affect vision and/or contrast sensitivity