ClinicalTrials.gg
CompletedNCT03054649Updated Jun 22, 2020Results posted

ClarVista HARMONI Toric Trial With Intraoperative Exchange

An interventional study of HARMONI® Modular Intraocular Lens System and Intraoperative optic exchange in Cataract, Corneal Astigmatism and Aphakia, sponsored by ClarVista Medical. Completed at 2 sites in 2 countries. Open to participants aged 22 Years and older. Per ClinicalTrials.gov, last updated 2020-06-22.

Sponsored by ClarVista Medical · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 7 months after the study started (first participant enrolled Jun 2016, registered Feb 2017).
Phase
Not applicable
Study type
Interventional
Enrollment
44
Allocation
Non-randomized
Ages
22 Years and older
Sex
All
01

Study summary

The purpose of this study was to demonstrate the safety and effectiveness of the HARMONI® Modular Intraocular Lens System with a toric optic in subjects with pre-existing corneal astigmatism in need of cataract surgery.

Read the detailed description

Subjects were implanted with the HARMONI® Modular Intraocular Lens System (HMIOL). The eye with the higher corneal astigmatism (study eye) was assigned to Cohort 1 and received the HARMONI® Modular Intraocular Lens System with a toric optic. The fellow eye was assigned to Cohort 2 and received the HARMONI® Modular Intraocular Lens System with a non-toric optic during primary implantation, which was replaced with the appropriate optic power (toric or non-toric) during an intraoperative exchange (IOE) procedure. A total of 7 study visits were planned, including a preoperative visit, operative visits for each eye, and 4 follow-up visits at 1 day, 1 week, 1 month, and 3 months postoperative. The total duration of participation for each subject was up to 6 months, which included a Day -90 to Day -0 preoperative period.

Alcon Research, LLC, acquired ClarVista Medical in 2017. This study was designed and conducted by ClarVista Medical, Inc. The study results were collected, analyzed, and provided by ClarVista Medical, Inc. to Alcon Research, LLC.

02

Conditions studied

  • Cataract
  • Corneal Astigmatism
  • Aphakia

Keywords

  • cataract
  • intraoperative exchange
  • intraocular lens
  • astigmatism
  • toric
03

In context

Cataract

1,726 studies on the registry are indexed under Cataract; 230 are open to participants now.

This study's enrollment of 44 is below the median of 80 across 1,171 interventional studies indexed under Cataract.

Browse Cataract studies →

Lead sponsor

ClarVista Medical is the lead sponsor of 4 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
22 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Inclusion Criteria

  • Willing and able to return for scheduled treatment and follow-up examinations for up to 6 month study duration.
  • Planned removal of visually significant bilateral cataracts.
  • Pre-existing corneal astigmatism in at least 1 eye.
  • Willing to discontinue contact lens wear for the duration of the study.
  • Best Corrected Visual Acuity (BCVA) projected to be 0.2 logarithm Minimum Angle of Resolution (logMAR) or lower.
  • Visual symptoms related to cataracts.

Key Exclusion Criteria

  • History of any intraocular or corneal surgery in either eye (including refractive).
  • Pregnant or lactating.
  • History of any clinically significant retinal pathology or ocular diagnosis in either eye that could alter or limit final postoperative visual prognosis.
  • History of any ocular condition which could affect the stability of the intraocular lens (IOL) in either eye.
  • Uncontrolled glaucoma in either eye (per Investigator judgement).
  • Severe dry eye that, in the opinion of the investigator, would impair the ability to obtain reliable study measurements
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
44 participants (actual)

Study arms

  • Experimental
    Cohort 1

    Study eye: Primary implantation of HMIOL system with toric optic and no intraoperative optic exchange

    Device: HARMONI® Modular Intraocular Lens System

  • Experimental
    Cohort 2

    Fellow eye: Primary implantation of HMIOL system with monofocal optic, followed by intraoperative optic exchange (toric or non-toric optic)

    Device: HARMONI® Modular Intraocular Lens System · Procedure: Intraoperative optic exchange

Interventions

  • DeviceHARMONI® Modular Intraocular Lens System

    Two-component system consisting of a base and a separate optic that allows for an intraoperative exchange of the optic only without direct manipulation of the capsular bag

    Also known as: HMIOL

  • ProcedureIntraoperative optic exchange

    Removal of one optic and replacement with another during cataract surgery for the purpose of improving refractive outcomes

    Also known as: IOE

06

What researchers measure

Primary outcomes

  1. Mean Manifest Refraction Cylinder (MRCYL) for Eyes Implanted With HMTIOL

    A manifest refraction (manual vision test) was conducted using letter charts and a phoropter. Manifest refraction cylinder is the amount of added correction needed to compensate for any astigmatism that may be present. MRCYL was measured in diopters and reported as a negative number, with a less negative number indicating a lesser amount of added correction. No formal statistical hypothesis testing was planned.

    Time frame: Month 1 postoperative, Month 3 postoperative

  2. Mean Manifest Refraction Cylinder (MRCYL) Prediction Error (PE) for Eyes Implanted With HMTIOL

    A manifest refraction (manual vision test) was conducted using letter charts and a phoropter. Manifest refraction cylinder is the amount of power needed to correct any astigmatism that may be present. MRCYL was measured in diopters and reported as a negative number. MRCYL PE was calculated as postoperative MRCYL adjusted to 6 meters minus MRCYL target residual refractive error (TRRE), with a lower absolute value indicating a more accurate cylinder power calculation. No formal statistical hypothesis testing was planned.

    Time frame: Month 1 postoperative, Month 3 postoperative

  3. Mean Reduction in Cylinder Power for Eyes Implanted With HMTIOL

    A manifest refraction (manual vision test) was conducted using letter charts and a phoropter. Manifest refraction cylinder is the amount of power needed to correct any astigmatism that may be present. MRCYL was measured in diopters and reported as a negative number. Cylinder power reduction was calculated as the absolute preoperative magnitude of corneal cylinder (K) minus the absolute postoperative magnitude of MRCYL at the corneal plane. No formal statistical hypothesis testing was planned.

    Time frame: Baseline (Day 0 preoperative), Month 3 postoperative

  4. Mean Percent Reduction in Cylinder Power for Eyes Implanted With HMTIOL

    A manifest refraction (manual vision test) was conducted using letter charts and a phoropter. Manifest refraction cylinder is the amount of power needed to correct any astigmatism that may be present. MRCYL was measured in diopters and reported as a negative number. Cylinder power reduction was calculated as the absolute preoperative magnitude of corneal cylinder (K) minus the absolute postoperative magnitude of MRCYL at the corneal plane. Therefore, the cylindrical power percent reduction was the cylinder power reduction divided by the absolute value of preoperative magnitude of corneal cylinder (K) × 100. A higher number (greater percent reduction) indicates better astigmatism correction by the toric IOL. No formal statistical hypothesis testing was planned.

    Time frame: Baseline (Day 0 preoperative), Month 3 postoperative

  5. Mean Manifest Refraction Spherical Equivalent (MRSE) Prediction Error (PE)

    A manifest refraction (manual vision test) was conducted using letter charts and a phoropter. The manifest refraction spherical equivalent (MRSE) was calculated as follows: sphere + 1/2 cylinder, and measured in diopters (D). MRSE PE was calculated as postoperative MRSE adjusted to 6 meters minus MRSE target residual refractive error (TRRE). The lower the absolute number, the more accurate the IOL power calculation is. No formal statistical hypothesis testing was planned.

    Time frame: Month 3 postoperative

  6. Mean Absolute Rotation of IOL Meridian

    IOL orientation was measured with slit-lamp photography. IOL rotation was defined as the difference between axis of IOL orientation on the day of surgery and the subsequent postoperative visit. IOL rotation was measured in degrees, with a lower number indicating less rotation. No formal statistical hypothesis testing was planned.

    Time frame: Baseline (Day 0 operative), Day 1 postoperative, Week 1 postoperative, Month 1 postoperative, Month 3 postoperative

  7. Number of Eyes With Absolute Rotation of IOL Meridian by Visit - Cohort 1

    IOL orientation was measured with slit-lamp photography. IOL rotation was defined as the difference between axis of IOL orientation on the day of surgery and the subsequent postoperative visit. IOL rotation was measured in degrees and is reported categorically. No formal statistical hypothesis testing was planned.

    Time frame: Baseline (Day 0 operative), Day 1 postoperative, Week 1 postoperative, Month 1 postoperative, Month 3 postoperative

  8. Number of Eyes With Absolute Rotation of IOL Meridian by Visit - Cohort 2

    IOL orientation was measured with slit-lamp photography. IOL rotation was defined as the difference between axis of IOL orientation on the day of surgery and the subsequent postoperative visit. IOL rotation was measured in degrees and is reported categorically. No formal statistical hypothesis testing was planned.

    Time frame: Baseline (Day 0 operative), Day 1 postoperative, Week 1 postoperative, Month 1 postoperative, Month 3 postoperative

  9. Percentage of Eyes With Best Corrected Distance Visual Acuity (BCDVA) by Visit - Cohort 1

    Visual Acuity of the eye was tested while reading charts at 20-foot equivalent distance from the participant with the correction obtained from manifest refraction testing. BCDVA is reported categorically using the Snellen fraction, which compares the participant's result to the result expected from a 'normal' visual system. The numerator represents the distance between the participant and the chart, and the denominator represents the distance at which a person with 'normal' vision would be able to discern the same letter size. 20/20 is considered to be 'normal' vision, whereas visual acuity of 20/40 means the participant is able to read a certain size letter 20 feet away that a person with 'normal' vision would be able to read from 40 feet away. A larger denominator, therefore, indicates a lower visual acuity. No formal statistical hypothesis testing was planned.

    Time frame: Baseline (Day 0 operative), Week 1 postoperative, Month 1 postoperative, Month 3 postoperative

  10. Percentage of Eyes With Best Corrected Distance Visual Acuity (BCDVA) by Visit - Cohort 2

    Visual Acuity of the eye was tested while reading charts at 20-foot equivalent distance from the participant with the correction obtained from manifest refraction testing. UCDVA is reported categorically using the Snellen fraction, which compares the participant's result to the result expected from a 'normal' visual system. The numerator represents the distance between the participant and the chart, and the denominator represents the distance at which a person with 'normal' vision would be able to discern the same letter size. 20/20 is considered to be 'normal' vision, whereas visual acuity of 20/40 means the participant is able to read a certain size letter 20 feet away that a person with 'normal' vision would be able to read from 40 feet away. A larger denominator, therefore, indicates a lower visual acuity. No formal statistical hypothesis testing was planned.

    Time frame: Baseline (Day 0 operative), Week 1 postoperative, Month 1 postoperative, Month 3 postoperative

  11. Percentage of Eyes With Uncorrected Distance Visual Acuity (UCDVA) by Visit - Cohort 1

    Visual Acuity of the eye was tested while reading charts at 20-foot equivalent distance from the participant with an optical infinity adjustment of +0.25 diopter (D). The Snellen fraction compares the participant's result to the result expected from a 'normal' visual system. The numerator represents the distance between the participant and the chart, and the denominator represents the distance at which a person with 'normal' vision would be able to discern the same letter size. 20/20 is considered to be 'normal' vision, whereas visual acuity of 20/40 means the participant is able to read a certain size letter 20 feet away that a person with 'normal' vision would be able to read from 40 feet away. A larger denominator, therefore, indicates a lower visual acuity. No formal statistical hypothesis testing was planned.

    Time frame: Baseline (Day 0 operative), Day 1 postoperative, Week 1 postoperative, Month 1 postoperative, Month 3 postoperative

  12. Percentage of Eyes With Uncorrected Distance Visual Acuity (UCDVA) by Visit - Cohort 2

    Visual Acuity of the eye was tested while reading charts at 20-foot equivalent distance from the participant with an optical infinity adjustment of +0.25 diopter (D). The Snellen fraction compares the participant's result to the result expected from a 'normal' visual system. The numerator represents the distance between the participant and the chart, and the denominator represents the distance at which a person with 'normal' vision would be able to discern the same letter size. 20/20 is considered to be 'normal' vision, whereas visual acuity of 20/40 means the participant is able to read a certain size letter 20 feet away that a person with 'normal' vision would be able to read from 40 feet away. A larger denominator, therefore, indicates a lower visual acuity. No formal statistical hypothesis testing was planned.

    Time frame: Baseline (Day 0 operative), Day 1 postoperative, Week 1 postoperative, Month 1 postoperative, Month 3 postoperative

  13. Number of Eyes With Preservation of BCDVA at Month 1 and Month 3

    Preservation of BCDVA was defined in terms of lines lost when reading the ETDRS chart at each visit compared to the prior best-achieved BCDVA. Loss of \< 1 line included subjects with less than a 1 line loss, no change or improvement in BCDVA. No formal statistical hypothesis testing was planned.

    Time frame: Week 1 postoperative, Month 1 postoperative, Month 3 postoperative

  14. Number of Ocular Adverse Events Through Month 3

    Ocular adverse events were identified as outlined in ISO 11979-2014 Annex B. No formal statistical hypothesis testing was planned.

    Time frame: Up to Month 3 postoperative

  15. Number of Device Deficiencies Post Implantation

    A Device Deficiency (DD) was defined as a failure of the device to meet its performance specifications or expectations, or otherwise not perform as intended. This could include either a malfunction or damage to the device or any part thereof, regardless of the source of malfunction or damage, including user error, and regardless of the presence of injury (or lack thereof) to subject, user, or bystander. No formal statistical hypothesis testing was planned.

    Time frame: Up to Month 3 postoperative

  16. Number of Secondary Surgical Interventions, Other Than Intraroperative Optic Exchange and Rotational Adjustment of the Toric Optic in Cohort 2

    A secondary surgical intervention (SSI) was defined as a surgical procedure that occurred after primary implantation and was conducted for the purpose of resolving residual refractive error (RRE) and optimizing visual outcomes. No formal statistical hypothesis testing was planned.

    Time frame: Up to Month 3 postoperative

  17. Percent Change in Endothelial Cell Count (ECC) at Month 3

    High quality images of the corneal endothelium (the single layer of cells on the inner surface of the cornea) were taken at the investigative site and sent to an independent central reading center for evaluation. A negative percent change value may indicate a decrease in the ability of the endothelium to maintain its primary function. No formal statistical hypothesis testing was planned.

    Time frame: Baseline (preoperative), Month 3 postoperative

07

Results

Posted Jun 22, 2020

Participant flow

This study was conducted at 1 site located in the Philippines and 1 site located in Mexico. Of the 44 subjects signing an informed consent, 12 failed to meet inclusion/exclusion criteria and 5 were withdrawn prior to implantation when the intraocular lens power was not available due to inventory restrictions.

Participant flow — Overall Study
MilestoneCohort 1Cohort 2
Started2727
Completed2727
Not completed00

Outcome measures

PrimaryMean Manifest Refraction Cylinder (MRCYL) for Eyes Implanted With HMTIOL

A manifest refraction (manual vision test) was conducted using letter charts and a phoropter. Manifest refraction cylinder is the amount of added correction needed to compensate for any astigmatism that may be present. MRCYL was measured in diopters and reported as a negative number, with a less negative number indicating a lesser amount of added correction. No formal statistical hypothesis testing was planned.

Time frame:
Month 1 postoperative, Month 3 postoperative
Reported as:
Mean · diopter
Mean Manifest Refraction Cylinder (MRCYL) for Eyes Implanted With HMTIOL
diopterCohort 1Cohort 2
Month 1 postoperative-0.54 ± 0.32-0.75 ± 0.31
Month 3 postoperative-0.58 ± 0.42-0.72 ± 0.45
PrimaryMean Manifest Refraction Cylinder (MRCYL) Prediction Error (PE) for Eyes Implanted With HMTIOL

A manifest refraction (manual vision test) was conducted using letter charts and a phoropter. Manifest refraction cylinder is the amount of power needed to correct any astigmatism that may be present. MRCYL was measured in diopters and reported as a negative number. MRCYL PE was calculated as postoperative MRCYL adjusted to 6 meters minus MRCYL target residual refractive error (TRRE), with a lower absolute value indicating a more accurate cylinder power calculation. No formal statistical hypothesis testing was planned.

Time frame:
Month 1 postoperative, Month 3 postoperative
Reported as:
Mean · diopter
Mean Manifest Refraction Cylinder (MRCYL) Prediction Error (PE) for Eyes Implanted With HMTIOL
diopterCohort 1Cohort 2
Month 1 postoperative-0.30 ± 0.28-0.53 ± 0.36
Month 3 postoperative-0.33 ± 0.33-0.44 ± 0.37
PrimaryMean Reduction in Cylinder Power for Eyes Implanted With HMTIOL

A manifest refraction (manual vision test) was conducted using letter charts and a phoropter. Manifest refraction cylinder is the amount of power needed to correct any astigmatism that may be present. MRCYL was measured in diopters and reported as a negative number. Cylinder power reduction was calculated as the absolute preoperative magnitude of corneal cylinder (K) minus the absolute postoperative magnitude of MRCYL at the corneal plane. No formal statistical hypothesis testing was planned.

Time frame:
Baseline (Day 0 preoperative), Month 3 postoperative
Reported as:
Mean · diopter
Mean Reduction in Cylinder Power for Eyes Implanted With HMTIOL
diopterCohort 1Cohort 2
Mean Reduction in Cylinder Power for Eyes Implanted With HMTIOL0.79 ± 0.560.53 ± 0.39
PrimaryMean Percent Reduction in Cylinder Power for Eyes Implanted With HMTIOL

A manifest refraction (manual vision test) was conducted using letter charts and a phoropter. Manifest refraction cylinder is the amount of power needed to correct any astigmatism that may be present. MRCYL was measured in diopters and reported as a negative number. Cylinder power reduction was calculated as the absolute preoperative magnitude of corneal cylinder (K) minus the absolute postoperative magnitude of MRCYL at the corneal plane. Therefore, the cylindrical power percent reduction was the cylinder power reduction divided by the absolute value of preoperative magnitude of corneal cylinder (K) × 100. A higher number (greater percent reduction) indicates better astigmatism correction by the toric IOL. No formal statistical hypothesis testing was planned.

Time frame:
Baseline (Day 0 preoperative), Month 3 postoperative
Reported as:
Mean · percent reduction
Mean Percent Reduction in Cylinder Power for Eyes Implanted With HMTIOL
percent reductionCohort 1Cohort 2
Mean Percent Reduction in Cylinder Power for Eyes Implanted With HMTIOL54.9 ± 29.339.5 ± 34.2
PrimaryMean Manifest Refraction Spherical Equivalent (MRSE) Prediction Error (PE)

A manifest refraction (manual vision test) was conducted using letter charts and a phoropter. The manifest refraction spherical equivalent (MRSE) was calculated as follows: sphere + 1/2 cylinder, and measured in diopters (D). MRSE PE was calculated as postoperative MRSE adjusted to 6 meters minus MRSE target residual refractive error (TRRE). The lower the absolute number, the more accurate the IOL power calculation is. No formal statistical hypothesis testing was planned.

Time frame:
Month 3 postoperative
Reported as:
Mean · diopter
Mean Manifest Refraction Spherical Equivalent (MRSE) Prediction Error (PE)
diopterCohort 1Cohort 2
Mean Manifest Refraction Spherical Equivalent (MRSE) Prediction Error (PE)0.03 ± 0.45-0.12 ± 0.43
PrimaryMean Absolute Rotation of IOL Meridian

IOL orientation was measured with slit-lamp photography. IOL rotation was defined as the difference between axis of IOL orientation on the day of surgery and the subsequent postoperative visit. IOL rotation was measured in degrees, with a lower number indicating less rotation. No formal statistical hypothesis testing was planned.

Time frame:
Baseline (Day 0 operative), Day 1 postoperative, Week 1 postoperative, Month 1 postoperative, Month 3 postoperative
Reported as:
Mean · degrees
Mean Absolute Rotation of IOL Meridian
degreesCohort 1Cohort 2
Rotation from operative to Day 11.8 ± 1.32.1 ± 1.4
Rotation from operative to Week 12.4 ± 1.41.6 ± 1.7
Rotation from operative to Month 13.1 ± 4.52.3 ± 1.5
Rotation from operative to Month 33.2 ± 4.62.2 ± 1.6
PrimaryNumber of Eyes With Absolute Rotation of IOL Meridian by Visit - Cohort 1

IOL orientation was measured with slit-lamp photography. IOL rotation was defined as the difference between axis of IOL orientation on the day of surgery and the subsequent postoperative visit. IOL rotation was measured in degrees and is reported categorically. No formal statistical hypothesis testing was planned.

Time frame:
Baseline (Day 0 operative), Day 1 postoperative, Week 1 postoperative, Month 1 postoperative, Month 3 postoperative
Reported as:
Number · eyes
Number of Eyes With Absolute Rotation of IOL Meridian by Visit - Cohort 1
eyesCohort 1 - Day 1 PostoperativeCohort 1 - Week 1 PostoperativeCohort 1 - Month 1 PostoperativeCohort 1 - Month 3 Postoperative
Rotation from Operative ≤ 5 degrees22232322
Rotation from Operative >5 degrees to ≤ 10 degrees0000
Rotation from Operative >10 degrees to ≤ 20 degree0000
Rotation from Operative > 20 degrees0011
PrimaryNumber of Eyes With Absolute Rotation of IOL Meridian by Visit - Cohort 2

IOL orientation was measured with slit-lamp photography. IOL rotation was defined as the difference between axis of IOL orientation on the day of surgery and the subsequent postoperative visit. IOL rotation was measured in degrees and is reported categorically. No formal statistical hypothesis testing was planned.

Time frame:
Baseline (Day 0 operative), Day 1 postoperative, Week 1 postoperative, Month 1 postoperative, Month 3 postoperative
Reported as:
Number · eyes
Number of Eyes With Absolute Rotation of IOL Meridian by Visit - Cohort 2
eyesCohort 2 - Day 1 PostoperativeCohort 2 - Week 1 PostoperativeCohort 2 - Month 1 PostoperativeCohort 2 - Month 3 Postoperative
Rotation from Operative ≤ 5 degrees20171819
Rotation from Operative >5 degrees to ≤ 10 degrees0000
Rotation from Operative >10 degrees to ≤ 20 degree0000
Rotation from Operative > 20 degrees0000
PrimaryPercentage of Eyes With Best Corrected Distance Visual Acuity (BCDVA) by Visit - Cohort 1

Visual Acuity of the eye was tested while reading charts at 20-foot equivalent distance from the participant with the correction obtained from manifest refraction testing. BCDVA is reported categorically using the Snellen fraction, which compares the participant's result to the result expected from a 'normal' visual system. The numerator represents the distance between the participant and the chart, and the denominator represents the distance at which a person with 'normal' vision would be able to discern the same letter size. 20/20 is considered to be 'normal' vision, whereas visual acuity of 20/40 means the participant is able to read a certain size letter 20 feet away that a person with 'normal' vision would be able to read from 40 feet away. A larger denominator, therefore, indicates a lower visual acuity. No formal statistical hypothesis testing was planned.

Time frame:
Baseline (Day 0 operative), Week 1 postoperative, Month 1 postoperative, Month 3 postoperative
Reported as:
Number · Percentage of eyes
Percentage of Eyes With Best Corrected Distance Visual Acuity (BCDVA) by Visit - Cohort 1
Percentage of eyesCohort 1 - Baseline (Day 0 Preoperative)Cohort 1 - Week 1 PostoperativeCohort 1 - Month 1 PostoperativeCohort 1 - Month 3 Postoperative
20/20 Snellen or Better22.266.759.370.4
20/25 Snellen or Better51.977.885.292.6
20/32 Snellen or Better70.496.3100.096.3
20/40 Snellen or Better92.6100.0100.096.3
Worse than 20/40 Snellen7.40.00.03.7
PrimaryPercentage of Eyes With Best Corrected Distance Visual Acuity (BCDVA) by Visit - Cohort 2

Visual Acuity of the eye was tested while reading charts at 20-foot equivalent distance from the participant with the correction obtained from manifest refraction testing. UCDVA is reported categorically using the Snellen fraction, which compares the participant's result to the result expected from a 'normal' visual system. The numerator represents the distance between the participant and the chart, and the denominator represents the distance at which a person with 'normal' vision would be able to discern the same letter size. 20/20 is considered to be 'normal' vision, whereas visual acuity of 20/40 means the participant is able to read a certain size letter 20 feet away that a person with 'normal' vision would be able to read from 40 feet away. A larger denominator, therefore, indicates a lower visual acuity. No formal statistical hypothesis testing was planned.

Time frame:
Baseline (Day 0 operative), Week 1 postoperative, Month 1 postoperative, Month 3 postoperative
Reported as:
Number · percentage of eyes
Percentage of Eyes With Best Corrected Distance Visual Acuity (BCDVA) by Visit - Cohort 2
percentage of eyesCohort 2 - Baseline (Day 0 Preoperative)Cohort 2 - Week 1 PostoperativeCohort 2 - Month 1 PostoperativeCohort 2 - Month 3 Postoperative
20/20 Snellen or Better23.176.973.176.9
20/25 Snellen or Better57.784.688.592.3
20/32 Snellen or Better76.996.292.3100
20/40 Snellen or Better88.596.2100.0100.0
Worse than 20/40 Snellen11.53.80.00.0
PrimaryPercentage of Eyes With Uncorrected Distance Visual Acuity (UCDVA) by Visit - Cohort 1

Visual Acuity of the eye was tested while reading charts at 20-foot equivalent distance from the participant with an optical infinity adjustment of +0.25 diopter (D). The Snellen fraction compares the participant's result to the result expected from a 'normal' visual system. The numerator represents the distance between the participant and the chart, and the denominator represents the distance at which a person with 'normal' vision would be able to discern the same letter size. 20/20 is considered to be 'normal' vision, whereas visual acuity of 20/40 means the participant is able to read a certain size letter 20 feet away that a person with 'normal' vision would be able to read from 40 feet away. A larger denominator, therefore, indicates a lower visual acuity. No formal statistical hypothesis testing was planned.

Time frame:
Baseline (Day 0 operative), Day 1 postoperative, Week 1 postoperative, Month 1 postoperative, Month 3 postoperative
Reported as:
Number · percentage of eyes
Percentage of Eyes With Uncorrected Distance Visual Acuity (UCDVA) by Visit - Cohort 1
percentage of eyesCohort 1 - Baseline (Day 0 Preoperative)Day 1 PostoperativeCohort 1 - Week 1 PostoperativeCohort 1 - Month 1 PostoperativeCohort 1 - Month 3 Postoperative
20/20 Snellen or Better3.748.144.440.740.7
20/25 Snellen or Better14.855.659.374.170.4
20/32 Snellen or Better14.877.888.992.692.6
20/40 Snellen or Better40.796.3100.096.396.3
Worse than 20/40 Snellen59.33.70.03.73.7
PrimaryPercentage of Eyes With Uncorrected Distance Visual Acuity (UCDVA) by Visit - Cohort 2

Visual Acuity of the eye was tested while reading charts at 20-foot equivalent distance from the participant with an optical infinity adjustment of +0.25 diopter (D). The Snellen fraction compares the participant's result to the result expected from a 'normal' visual system. The numerator represents the distance between the participant and the chart, and the denominator represents the distance at which a person with 'normal' vision would be able to discern the same letter size. 20/20 is considered to be 'normal' vision, whereas visual acuity of 20/40 means the participant is able to read a certain size letter 20 feet away that a person with 'normal' vision would be able to read from 40 feet away. A larger denominator, therefore, indicates a lower visual acuity. No formal statistical hypothesis testing was planned.

Time frame:
Baseline (Day 0 operative), Day 1 postoperative, Week 1 postoperative, Month 1 postoperative, Month 3 postoperative
Reported as:
Number · percentage of eyes
Percentage of Eyes With Uncorrected Distance Visual Acuity (UCDVA) by Visit - Cohort 2
percentage of eyesCohort 2 - Baseline (Day 0 Preoperative)Cohort 2 - Day 1 PostoperativeCohort 2 - Week 1 PostoperativeCohort 2 - Month 1 PostoperativeCohort 2 - Month 3 Postoperative
20/20 Snellen or Better0.046.253.842.334.6
20/25 Snellen or Better3.865.476.973.169.2
20/32 Snellen or Better11.565.484.688.584.6
20/40 Snellen or Better50.092.392.3100.0100.0
Worse than 20/40 Snellen50.07.77.70.00.0
PrimaryNumber of Eyes With Preservation of BCDVA at Month 1 and Month 3

Preservation of BCDVA was defined in terms of lines lost when reading the ETDRS chart at each visit compared to the prior best-achieved BCDVA. Loss of \< 1 line included subjects with less than a 1 line loss, no change or improvement in BCDVA. No formal statistical hypothesis testing was planned.

Time frame:
Week 1 postoperative, Month 1 postoperative, Month 3 postoperative
Reported as:
Number · eyes
Number of Eyes With Preservation of BCDVA at Month 1 and Month 3
eyesCohort 1 - Month 1 PostoperativeCohort 1 - Month 3 PostoperativeCohort 2 - Month 1 PostoperativeCohort 2 - Month 3 Postoperative
Loss < 1 line27252526
Loss >= 1 lines0210
Loss >= 2 lines0100
Loss >= 3 lines0000
Loss >= 4 lines0000
PrimaryNumber of Ocular Adverse Events Through Month 3

Ocular adverse events were identified as outlined in ISO 11979-2014 Annex B. No formal statistical hypothesis testing was planned.

Time frame:
Up to Month 3 postoperative
Reported as:
Number · adverse event
Number of Ocular Adverse Events Through Month 3
adverse eventCohort 1Cohort 2
Conjunctivitis viral10
Cystoid macular oedema11
Ciliary zonular dehiscence01
Intraocular pressure increased01
Iridocyclitis01
PrimaryNumber of Device Deficiencies Post Implantation

A Device Deficiency (DD) was defined as a failure of the device to meet its performance specifications or expectations, or otherwise not perform as intended. This could include either a malfunction or damage to the device or any part thereof, regardless of the source of malfunction or damage, including user error, and regardless of the presence of injury (or lack thereof) to subject, user, or bystander. No formal statistical hypothesis testing was planned.

Time frame:
Up to Month 3 postoperative
Reported as:
Number · device deficiency
Number of Device Deficiencies Post Implantation
device deficiencyCohort 1 - No ExchangeCohort 2 - Intraoperative Exchange
Number of Device Deficiencies Post Implantation00
PrimaryNumber of Secondary Surgical Interventions, Other Than Intraroperative Optic Exchange and Rotational Adjustment of the Toric Optic in Cohort 2

A secondary surgical intervention (SSI) was defined as a surgical procedure that occurred after primary implantation and was conducted for the purpose of resolving residual refractive error (RRE) and optimizing visual outcomes. No formal statistical hypothesis testing was planned.

Time frame:
Up to Month 3 postoperative
Reported as:
Number · Secondary surgical interventions
Number of Secondary Surgical Interventions, Other Than Intraroperative Optic Exchange and Rotational Adjustment of the Toric Optic in Cohort 2
Secondary surgical interventionsCohort 1 - No ExchangeCohort 2 - Intraoperative Exchange
Number of Secondary Surgical Interventions, Other Than Intraroperative Optic Exchange and Rotational Adjustment of the Toric Optic in Cohort 200
PrimaryPercent Change in Endothelial Cell Count (ECC) at Month 3

High quality images of the corneal endothelium (the single layer of cells on the inner surface of the cornea) were taken at the investigative site and sent to an independent central reading center for evaluation. A negative percent change value may indicate a decrease in the ability of the endothelium to maintain its primary function. No formal statistical hypothesis testing was planned.

Time frame:
Baseline (preoperative), Month 3 postoperative
Reported as:
Mean · percent change
Percent Change in Endothelial Cell Count (ECC) at Month 3
percent changeCohort 1 - No ExchangeCohort 2 - Intraoperative Exchange
Percent Change in Endothelial Cell Count (ECC) at Month 3-12.5 ± 10.1-9.0 ± 10.3

Adverse events

Collected over Adverse events were collected from time of consent until study exit: Up to 6 months, including a Day -90 to Day -0 preoperative period and a 3-month postoperative period.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Cohort 10/27 (0%)0/27 (0%)0/27 (0%)
Cohort 20/27 (0%)1/27 (3.7%)0/27 (0%)
Most frequent serious events
Most frequent serious events
EventCohort 1Cohort 2
Eye complication associated with deviceGeneral disorders0/271/27

Baseline characteristics

All implanted subjects

Age, Continuous
Age, Continuous(years)HMIOL
Mean67.4 ± 10.6
Sex: Female, Male
Sex: Female, Male(Participants)HMIOL
Female20
Male7
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)HMIOL
Asian25
Black0
Caucasian0
Other2
08

Study locations

2 sites
  • ClarVista Investigative Site
    Tijuana, Estado de Baja California 22320, Mexico
  • ClarVista Investigative Site
    Makati, Manila 1200, Philippines
09

References and documents

Study documents

  • Study protocol · Dec 1, 2016
  • Statistical analysis plan · Aug 14, 2017

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 22, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03054649
Lead sponsor
ClarVista Medical
Responsible party
Sponsor
First posted
Feb 15, 2017
Start date
Jun 28, 2016
Primary completion
Jul 18, 2017
Completion
Jul 18, 2017
Results posted
Jun 22, 2020
Last update
Jun 22, 2020

Study contacts

Sr. Clinical Trial Lead, CDMA Surgical
study director · Alcon Research, LLC

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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