Prospective Multicentre Clinical Trial With the Artiflex Presbyopic (Artiplus), an Iris-fixated Multifocal Intraocular Lens for the Correction of Presbyopia in Phakic Eyes
试验速览
- 阶段
- 不适用
- 状态
- 进行中（未招募）
- 发起方
- Ophtec BV
- 入组人数
- 49
- 试验地点
- 7
- 主要终点
- Improvement in monocular and binocular uncorrected near visual acuity (UNVA)
研究概览
简要总结
The purpose of this clinical trial is to evaluate the effectiveness and safety of the multifocal Artiflex Presbyopic (Artiplus) intraocular lens.
详细描述
The study is a prospective, open-label, single-arm, and multicentre clinical investigation with three years of follow-up. Artiflex Presbyopic (Artiplus) is a phakic intraocular lens to be implanted in the anterior chamber, intended for adult subjects and indicated for the optical correction of presbyopia and spherical error requiring a correction.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •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 Patients with reading glasses of minimum +1D.
- •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 a 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
排除标准
- •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 disease:
- •Preoperative ocular or systemic condition or medication use that would be expected to present 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
- •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 for subjects < 40 years old and 2.8 mm for subjects > 40 years old. Anterior chamber depth is being measured 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 (dependent on the evaluation of physician)
- •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
- •Unstable refraction (≥ 0.5D of variability in refraction over the last 12 months)
- •Aged under 18
结局指标
主要结局
Improvement in monocular and binocular uncorrected near visual acuity (UNVA)
时间窗: 3 years
* Percentage of eyes that achieve UNVA of 0.3 logMAR or better * Percentage of eyes that achieve UNVA of 0.0 logMAR or better
Improvement in monocular and binocular corrected near visual acuity (CNVA)
时间窗: 3 years
* Percentage of eyes that achieve CNVA of 0.3 logMAR or better * Percentage of eyes that achieve CNVA of 0.0 logMAR or better
Defocus evaluation
时间窗: 3 years
Binocular defocus evaluation will be obtained by using the best-corrected distance refraction and then defocusing the image in 0.5 D increments from +1.5 to -5.0 D
Improvement in monocular and binocular distance corrected near visual acuity (DCNVA)
时间窗: 3 years
* Percentage of eyes that achieve DCNVA of 0.3 logMAR or better * Percentage of eyes that achieve DCNVA of 0.0 logMAR or better
Improvement in monocular and binocular uncorrected intermediate visual acuity (UIVA)
时间窗: 3 years
* Percentage of eyes that achieve UIVA of 0.3 logMAR or better * Percentage of eyes that achieve UIVA of 0.0 logMAR or better
Improvement in monocular and binocular distance corrected intermediate visual acuity (DCIVA)
时间窗: 3 years
* Percentage of eyes that achieve DCIVA of 0.3 logMAR or better * Percentage of eyes that achieve DCIVA of 0.0 logMAR or better
Improvement in monocular and binocular uncorrected distance visual acuity (UDVA)
时间窗: 3 years
Percentage of eyes that achieve UDVA of 0.3 logMAR or better Percentage of eyes that achieve UDVA of 0.0 logMAR or better
Improvement in monocular and binocular corrected distance visual acuity (CDVA)
时间窗: 3 years
* Percentage of eyes that achieve CDVA of 0.3 logMAR or better * Percentage of eyes that achieve CDVA of 0.0 logMAR or better
Satisfaction questionnaire
时间窗: 3 years
* Percentage of subjects that is satisfied with the overall procedure * Percentage of subjects that is satisfied with uncorrected near vision * Percentage of subjects that is satisfied with uncorrected intermediate vision * Percentage of subjects that is satisfied with uncorrected distance vision
Endothelial cell density
时间窗: 3 years
Comparison of the preoperative and postoperative endothelial cell density
Adverse event (AEs) / complication rates
时间窗: 3 years
* Cumulative numbers of adverse events, e.g. cystoid macular edema (CME), hypopyon, endophthalmitis, lens dislocation, pupillary block, retinal detachment, necessary secondary surgical interventions * Cumulative numbers of adverse events persistently present, e.g. corneal stroma edema, cystoid macular edema, iritis, raised intraocular pressure (IOP) requiring treatment, lens deposits * The occurrence of adverse events will be compared to and should not exceed the reference safety and performance endpoint (SPE) rates as defined by ISO 11979-7:2018, Annex E, table E.1
Predictability of the manifest refraction spherical equivalent (MRSE)
时间窗: 3 years
The absolute difference between the actually obtained MRSE and the target MRSE
Stability of manifest refraction spherical equivalent (MRSE)
时间窗: 3 years
Mean change in MRSE between visits as determined by a paired analysis
Evaluation of visual disturbances using a validated questionnaire
时间窗: 3 years
Assessing the percentage of subjects who experience different visual disturbances, by means of questionnaire
次要结局
未报告次要终点