Clinical Outcome at 5 Years After Implantation of the Liberty677MY Multifocal Intraocular Lens

Study Overview
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Brief Summary
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The study will assess visual outcomes, light disturbances and patients' satisfaction after implantation with the Liberty677MY multifocal IOL, as well as protection of PCO development within 5 year follow-up.

Detailed Description
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The Liberty677MY multifocal IOL is designed for restoring near, intermediate and distance vision. The technology of Liberty 677MY is based on the elevated phase shift technology (patent pending). Previous evaluations showed the strength of studied IOL both in laboratory and clinical conditions. Patients will be examined 5 years after implantation. The examination will include the measurement of the best corrected distance, intermediate and near visual acuity (assessed with Early Treatment Diabetic Retinopathy Study (ETDRS) charts), intraocular pressure (contact Goldman tonometry), biomicroscopic and fundocsopic examination, contrast sensitivity (CSV-1000), defocus curve, reading capability, pupilometry in different light conditions and PCO evaluation, Nd:YAG capsulotomy rate, photo-documentation of anterior segment. YAG capsulotomy will be indicated in case of posterior capsule opacification (PCO). The criteria for YAG capsulotomy will be visual acuity decreased 2 or more lines when using (ETDRS) charts. Details of all related and unrelated complications will be documented, including severity, time of onset, specific treatment and clinical outcome. The investigators will also record whether the capsulorhexis is on or partially off the optic.

Official Title
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Clinical Outcome at 5 Years After Implantation of Medicontur Multifocal Intraocular Lens Liberty 677MY: Visual Outcomes, Patients' Satisfaction, YAG Capsulotomy Rate

Conditions
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Cataract

Intervention / Treatment
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* Device: Liberty677MY Multifocal IOL


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: pseudophakic patients implanted with Liberty 677MY in 2014-2015 during the study under the ethical approval: 059823/2014/OTIG Exclusion Criteria: diabetic retinopathy iris neovascularisation serious intraoperative complications congenital eye abnormality glaucoma pseudoexfoliation syndrome amblyopia uveitis long-term anti-inflammatory treatment AMD (advanced AMD) retinal detachment prior ocular surgery in personal medical history (except cataract surgery aiming the implantation of the multifocal IOL) previous laser treatment corneal diseases severe retinal diseases (dystrophy, degeneration) severe myopia (if required IOL power is lower than 10 D) inadequate visualization of the fundus on preoperative examination patients deemed by the clinical investigator because of any systemic disease. pregnancy eye trauma in medical history current use of systemic steroids or topical ocular medication preoperative smaller pupil size of 6 mm under topical mydriasis kappa angle >5°

Ages Eligible for Study
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Minimum Age: 40 Years
Maximum Age: 86 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Device: Liberty677MY Multifocal IOL|multifocal intraocular lens (IOL)|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Uncorrected Decimal VA (6 m) | Visual acuity (VA) was tested monocularly (each eye separately) and binocularly (both eyes together) 5 years after implantation, unaided at a distance of 6 meters (m) using Early Treatment Diabetic Retinopathy ( ETDRS) charts and assessed in logarithm of the minimum angle of resolution (LogMAR). | 5 years after implantation | 
| Uncorrected Decimal VA (60 cm) | Visual acuity (VA) was tested monocularly (each eye separately) and binocularly (both eyes together) 5 years after implantation, unaided at a distance of 60 centimeters (cm) using ETDRS charts, assessed in LogMAR. | 5 years after implantation | 
| Uncorrected Decimal VA (40 cm) | Visual acuity (VA) was tested monocularly (each eye separately) and binocularly (both eyes together) 5 years after implantation, unaided at a distance of 40 centimeters (cm) using ETDRS charts, assessed in LogMAR. | 5 years after implantation | 
| Corrected Decimal VA (6 m) | Visual acuity (VA) was tested monocularly (each eye separately) and binocularly (both eyes together) 5 years after implantation, unaided at a distance of 6 meters (m) using ETDRS charts, assessed in LogMAR. | 5 years after implantation | 
| Corrected Decimal VA (60 cm) | Visual acuity (VA) was tested monocularly (each eye separately) and binocularly (both eyes together) 5 years after implantation, unaided at a distance of 60 centimeters (cm) using ETDRS charts , assessed in LogMAR. | 5 years after implantation | 
| Corrected Decimal VA (40 cm) | Visual acuity (VA) was tested monocularly (each eye separately) and binocularly (both eyes together) 5 years after implantation, unaided at a distance of 40 centimeters (cm) using ETDRS charts, assessed in LogMAR. | 5 years after implantation | 
| Defocus Curve Profiles | Visual acuity measurement (assessed in logarithm of the minimum angle of resolution (LogMAR)) taken with different levels of optical defocus was tested monocularly (each eye separately) and binocularly (both eyes together). | 5 years after implantation | 
| Contrast Sensitivity CSV-1000 | Binocular Assessment of contrast sensitivity at threshold using the Contrast sensitivity vision (CSV) CSV-1000 in photopic and mesopic conditions with or without glare. | 5 years after implantation | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Posterior capsule opacification (PCO) rate |  | 5 years after implantation |