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NCT Number: NCT04632784

Clinical Trial With Artiflex Presbyopic (Artiplus)

The purpose of this clinical trial is to evaluate the effectiveness and safety of the multifocal Artiflex Presbyopic (Artiplus) intraocular lens.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

Key information

Conditions

Presbyopia Ametropia Eye Diseases Hyperopia Myopia Refractive Errors

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

GM st. Mary's Eye clinic, Busan, South Korea

Loading trial locations.

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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 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

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 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

Treatment and study plan

Artiflex Presbyopic (Artiplus) implantation

Device

Implantation of iris-fixated multifocal Artiflex Presbyopic IOL (Artiplus)

Primary outcomes

  1. Improvement in monocular and binocular uncorrected near visual acuity (UNVA)

    Time frame: 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

  2. Improvement in monocular and binocular corrected near visual acuity (CNVA)

    Time frame: 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

  3. Improvement in monocular and binocular distance corrected near visual acuity (DCNVA)

    Time frame: 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

  4. Improvement in monocular and binocular uncorrected intermediate visual acuity (UIVA)

    Time frame: 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

  5. Improvement in monocular and binocular distance corrected intermediate visual acuity (DCIVA)

    Time frame: 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

  6. Improvement in monocular and binocular uncorrected distance visual acuity (UDVA)

    Time frame: 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

  7. Improvement in monocular and binocular corrected distance visual acuity (CDVA)

    Time frame: 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

  8. Defocus evaluation

    Time frame: 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

  9. Predictability of the manifest refraction spherical equivalent (MRSE)

    Time frame: 3 years

    The absolute difference between the actually obtained MRSE and the target MRSE

  10. Predictability of the manifest refraction spherical equivalent (MRSE)

    Time frame: 3 years

    The percentage of eyes that achieves a MRSE of less than or equal to 0.5 D difference between the actual and target MRSE

  11. Predictability of the manifest refraction spherical equivalent (MRSE)

    Time frame: 3 years

    The percentage of eyes that achieves a MRSE of less than or equal to 1.0 D difference between the actual and target MRSE

  12. Stability of manifest refraction spherical equivalent (MRSE)

    Time frame: 3 years

    Mean change in MRSE between visits as determined by a paired analysis

  13. Stability of manifest refraction spherical equivalent (MRSE)

    Time frame: 3 years

    The percentage of eyes that achieves a change in MRSE of less than or equal to 0.5 D between two consecutive refraction measurements

  14. Stability of manifest refraction spherical equivalent (MRSE)

    Time frame: 3 years

    The percentage of eyes that achieves a change in MRSE of less than or equal to 1.0 D between two consecutive refraction measurements

  15. Evaluation of visual disturbances using a validated questionnaire

    Time frame: 3 years

    Assessing the percentage of subjects who experience different visual disturbances, by means of questionnaire

  16. Evaluation of visual disturbances using a validated questionnaire

    Time frame: 3 years

    Assessing the occurrence of the different visual disturbances by means of questionnaire

  17. Evaluation of visual disturbances using a validated questionnaire

    Time frame: 3 years

    Assessing the severity of the different visual disturbances by means of questionnaire

  18. Evaluation of visual disturbances using a validated questionnaire

    Time frame: 3 years

    Assessing the bothersomeness of the different visual disturbances by means of questionnaire

  19. Evaluation of visual disturbances using a validated questionnaire

    Time frame: 3 years

    Assessing the time of onset of visual disturbances by means of questionnaire

  20. Satisfaction questionnaire

    Time frame: 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

  21. Endothelial cell density

    Time frame: 3 years

    Comparison of the preoperative and postoperative endothelial cell density

  22. Endothelial cell density

    Time frame: 3 years

    Endothelial cell loss over time

  23. Endothelial cell density

    Time frame: 3 years

    Additionally, a comparison between the scientific literature reported naturally occurring endothelial cell loss over time (approx. 0.6% per year; Bourne et al., 1997) and the study observed cell loss will be performed

  24. Adverse event (AEs) / complication rates

    Time frame: 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

Sponsors and collaborators

Lead sponsor

Ophtec BV

Industry

Registry information

Official study title

Prospective Multicentre Clinical Trial With the Artiflex Presbyopic (Artiplus), an Iris-fixated Multifocal Intraocular Lens for the Correction of Presbyopia in Phakic Eyes

Important dates

Study start
2021
Primary completion
2023
Study completion
2026
First posted
Nov 17, 2020
Registry last updated
Feb 20, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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