Clinical Trial With Artiflex Presbyopic

This is an interventional treatment trial for Presbyopia focused on measuring Artiflex, iris-fixated, phakic intraocular lens, PIOL, Ophtec Read More

Inclusion Criteria:

• Presbyopic adult
• Potential for binocular vision
• Subject wishes to be spectacle independent for near and far vision
• Refractive error that can be corrected with correction at PIOL plane from +2.0 to -15.0 D
• Subject requiring a presbyopic correction
• A distance corrected near visual acuity of 20/60 or worse (0.48 LogMAR or higher)
• Stable refraction (±0.75 D), as expressed by manifest refraction spherical equivalent (MRSE) for a minimum of 12 months prior to surgery, verified by consecutive refractions and/or medical records or prescription history
• Expected best-corrected visual acuity of 0.2 logMAR (0.63 Snellen decimal) or better after lens implantation
• Current contact lens wearer should demonstrate stable refraction (± 0.5 D), expressed as subjective refraction spherical equivalent, on two consecutive examination dates performed at least 7 days apart. Before the first refraction, the contact lens wearer should not have worn lenses for at least 2 weeks in case of rigid and toric contact lenses, or 3 days for spherical soft contact lenses.
• Any subject, who is expected to have a residual postoperative cylindrical refractive error of below 0.75 D
• Ability to give informed consent
• Availability, willingness and sufficient cognitive awareness and physical ability to comply with examination procedures throughout the entire duration of the study

Exclusion Criteria:

Pre-existing pathology or physiology which may be aggravated by the implant or where the implant may interfere with the possibility of examining or treating the disease:

• Preoperative ocular or systemic condition or medication use that would be expected to present an undue risk to the subject, that can predispose for future complications or confound the outcome(s) of the study. E.g. the systemic use of alpha-1a adrenergic receptor antagonists was suggested to increase the occurrence of intraoperative floppy iris syndrome, alter iris morphology - or more specifically reduce iris thickness at the site of potential IOL enclavation - and increase postoperative endothelial cell loss.
• Previous ocular surgery which might affect the outcome of the study
• Concurrent participation or participation during the last 30 days in another drug or device investigation
• Subjects with a distance corrected near visual acuity of better than 20/60 or 0.48 LogMAR.
• Preoperative subjective astigmatism exceeding 1.0 D
• Secondary surgical procedure planned during the first 6 months of the study (e.g. laser treatment to correct astigmatism)
• Amblyopia
• Preoperative anterior chamber depth measurement of below 3.0 mm from corneal endothelium to the anterior pole of the crystalline lens. This will result in a critical distance between PIOL and endothelium of 1.5 mm or more as simulated with anterior segment imaging.
• White-to-white smaller than 10.5 mm

• Subjects not meeting the age specific minimum preoperative endothelial cell density as defined below:

  31 to 35 years of age 2400 cells/mm2; 36 to 45 years of age 2200 cells/mm2; > 45 years of age 2000 cells/mm2

• Corneas with high rates of polymegethism (a coefficient of variation over 0.40) and pleomorphism (the presence of less than 50% hexagonal cells).
• Abnormal iris (e.g. convex, bulging or volcano shaped iris)
• Crystalline lens rise of 600 µm or more
• Abnormal cornea (keratoconus, opaque cornea, corneal scars, post corneal transplant, corneal dystrophy, or other)
• Ocular surface conditions which might influence the quality of vision and affect the outcome of the study
• Abnormal pupil (e.g. nonreactive, fixed)
• Ectopic pupil
• Pupil in photopic light conditions smaller than 2.6 mm
• Pupil in scotopic light conditions greater than 7.0 mm
• High preoperative intraocular pressure (>21 mm Hg)
• Cataract of any grade
• Glaucoma or family history of glaucoma
• Diabetes or diabetic retinopathy
• Acute or chronic inflammation
• Chronic or recurrent uveitis or family history of the same condition
• Retinal detachments or family history of retinal detachments
• Corticosteroid responder
• Pregnant or nursing
• Aged under 18