- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01352442
Safety and Effectiveness of the AcuFocus Corneal Inlay ACI7000PDT in Presbyopes
A Prospective Multicenter Clinical Trial to Evaluate the Safety and Effectiveness of the AcuFocus Corneal Inlay ACI 7000PDT Implanted Intrastromally for Modified Monovision in Presbyopic Subjects
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The design and mechanism of action of the AcuFocus™ Corneal Inlay (ACI 7000PDT) is based on the well-established concept of small-aperture optics. In cameras, depth of focus is controlled by reducing the aperture through which light enters; the smaller the aperture, the greater the depth of focus. This concept also applies to the human eye. In the eye of an emmetropic presbyope, the natural lens cannot fully accommodate to focus the light rays from a near object onto a single point on the retina. Thus, a point object is imaged as a blur circle on the retina, and images of extended objects are degraded as well. If an opaque disc with a small aperture in the center is placed in front of the eye, the peripheral rays will be obscured while the central rays pass unaffected. Since peripheral rays enter the eye at a larger angle, they create a larger blur circle at the retinal image plane. Eliminating these peripheral rays reduces the size of the blur circle, improving image resolution.
When the inlay is implanted in one eye, the increased depth of focus provides near and intermediate visual acuity while having a minimal effect on distance acuity. Under binocular conditions, the effect of having an inlay eye with a range of vision from distance to near combined with the uncorrected vision in the fellow presbyopic eye, which will essentially have good distance acuity with reduced near acuity, is similar to the contact lens modality known as "modified monovision."
The ACI is expected to provide presbyopic patients with improvement in near and intermediate vision.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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New South Wales
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Bondi Junction, New South Wales, Australia, 2022
- Vision Eye Institute
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Salzburg, Austria, A-5020
- Univ. Klinik fur Agugenheilkunde und Optometrie, Paracelsus Medzinishe Privatuniversitat Salzburg
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Paris, France, 75019
- Fondation Rothchild
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Tokyo, Japan
- Shinagawa Lasik Center
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Maastricht, Netherlands, 6229
- Maastricht University Medical Center
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Auckland, New Zealand
- Auckland Eye
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Christchurch
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Fendalton, Christchurch, New Zealand
- The Fendalton Eye Clinic
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Makati City, Philippines, 1200
- Asian Eye Institute
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Singapore, Singapore, 168751
- Singapore National Eye Centre
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Alicante, Spain, 03016
- CEIC Vissum Corporación Oftalmológica
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Istanbul, Turkey
- Beyoğlu Goz Training and Research Hospital
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Subjects must sign and be given a copy of the written Informed Consent form.
- Subjects must be emmetropes needing a magnitude of +1.00D to +2.50D of reading add.
- Subjects must have distance corrected near visual acuity worse than 20/40 and better than 20/100 in the eye to be implanted.
- Subjects must have distance visual acuity correctable to at least 20/20 in both eyes.
- Subjects must have a preoperative spherical equivalent of plano defined as Plano to -0.75D with no more than 0.75D of refractive cylinder as determined by cycloplegic refraction in the eye to be implanted.
- Subjects must have a stable refraction twelve months prior to ACI implantation: i.e. MRSE within 0.50D over prior twelve months as determined by subject history.
- Subjects who are soft contact lens wearers must discontinue their contact lenses for at least one week prior to ACI pre-operative examination.
- Subjects must have a minimum central corneal thickness of ≥ 500 microns in the eye to be implanted.
- Subjects must have a corneal power of ≥ 41.00D and ≤ 47.00D in all meridians in the eye to be implanted.
- Subjects must be ≥ 45 years and ≤ 60 years of age at the time of subject eligibility visit.
- Subjects must have an endothelial cell count ≥ 2000 cells/mm2 in the eye to be implanted.
- Subjects must be willing and able to return for scheduled follow-up examinations for 12 months after surgery.
- Subjects must demonstrate tolerance to monovision blur in the eye to be implanted as determined by loose lens blur tolerance or monovision contact lens trial.
Exclusion Criteria:
- Subjects with a difference of >1.00D between the spherical equivalent manifest refraction and the spherical equivalent cycloplegic refraction.
- Subjects with anterior segment pathology, including cataracts, in the eye to be implanted.
- Subjects with residual, recurrent, active ocular or uncontrolled eyelid disease, or any corneal abnormality (including endothelial dystrophy, guttata, recurrent corneal erosion, etc.) in the eye to be implanted.
- Subjects with ophthalmoscopic or topographic signs of keratoconus (or keratoconus suspect) or keratoectasia in the eye to be implanted.
- Subjects with dry eye as determined by objective testing; anesthetized Schirmer's test result <10 mm or a tear break-up time (TBUT) less than 10 seconds are excluded.
- Subjects taking chronic systemic medications known to exacerbate or induce moderate to severe dry eye in so far as measures of TBUT and Schirmers are decreased or borderline per Exclusion Criterion #5. Subjects taking the following classes of medications should be evaluated: anti-depressants, anti-histamines, beta-blockers, phenothiazines, atropine and atropine derivatives, oral contraceptives, anxiolytics, diuretics, anti-cholinergics, and anti-arrhythmics.
- Subjects with distorted or unclear corneal mires on topography maps of the eye to be implanted.
- Subjects with macular degeneration, retinal detachment, or any other fundus pathology that would prevent an acceptable visual outcome in the eye to be implanted.
- Subjects who have worn RGP or PMMA contact lenses within the last 6 months.
- Subjects who have undergone previous intraocular or corneal surgery, including PRK, LASIK, CK, LASEK, and cataract surgery in the eye to be implanted.
- Subjects with a history of herpes zoster or herpes simplex keratitis.
- Subjects who have a history of steroid-responsive rise in intraocular pressure, preoperative IOP > 21 mmHg, glaucoma, ocular hypertension, or are glaucoma suspects.
- Subjects with an abnormal threshold visual field.
- Subjects with a history of diagnosed diabetes, diagnosed autoimmune disease, connective tissue disease, or clinically significant atopic syndrome.
- Subjects on chronic systemic corticosteroids or other immunosuppressive therapy that may affect wound healing, and any immunocompromised subjects.
- Subjects who are using ophthalmic medication(s) other than artificial tears for treatment of any ocular pathology including ocular allergy.
- Subjects using systemic medications with significant ocular side effects.
- Subjects who are pregnant, lactating, or of child-bearing potential and not practicing a medically approved method of birth control.
- Subjects with known sensitivity to planned study concomitant medications.
- Subjects who are participating in any other ophthalmic drug or device clinical trial during the time of this clinical investigation.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Experimental: AcuFocus Corneal Inlay
The AcuFocus Corneal Inlay ACI 7000PDT, which is a small medical device, will be surgically implanted in one eye of each subject.
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corneal inlay
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
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Uncorrected Near Visual Acuity 20/32 or Better
Time Frame: 12 months
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12 months
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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Subjective Rating of Near Visual Acuity at 12 Months as Measured by Subjective Questionnaire
Time Frame: 12 months
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Mean subjective rating via questionnaire on 1 to 7 rating scale (1= very dissatisfied and 7 = very satisfied).
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12 months
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Collaborators and Investigators
Sponsor
Investigators
- Study Director: Perry Binder, MD
Publications and helpful links
Helpful Links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- ACU-P10-020B
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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