Hydrophobic Acrylic Toric IOL Designed to Reduce the Effects of Preoperative Corneal Astigmatism

August 28, 2020 updated by: Bausch & Lomb Incorporated

To Evaluate the Safety and Effectiveness of the EnVista® One-Piece Hydrophobic Acrylic Toric IOL Designed to Reduce the Effects of Preoperative Corneal Astigmatism on Postoperative Refraction Following Cataract Surgery

The investigational enVista IOL, Model MX60Tis equipped with toric optics and axis marks on the posterior surface to minimize the possibility of surgically induced astigmatism.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The investigational enVista Toric IOL, Model MX60T, and the currently approved Model MX60, are identical with the exception of the addition of toric optics and axis marks on the posterior optic surface for the correction of astigmatism on the Model MX60T. Both lenses have an aspheric biconvex optic with a modified C haptic monoblock, single-piece design. The design and material of both the MX60 and MX60T allow them to be folded and inserted through small incisions to minimize the possibility of surgically induced astigmatism (SIA).

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
191

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • California
      • Irvine, California, United States, 92618
        • Bausch & Lomb

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

14 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Subjects must have a clinically significant cataract in the study eye that is considered amenable to treatment with standard phacoemulsification cataract extraction.
  • Subjects must require a lens power from 16.0 D to 27.0 D in the study eye.
  • Subjects must be willing to discontinue contact lens wear for the duration of the study and, demonstrate stability prior to biometry and surgery in the study eye.
  • Subjects must have a best corrected distance visual acuity (BCDVA) projected to be better than 20/30 after toric IOL implantation in the study eye.
  • Subjects must have predicted postoperative corneal astigmatism between 0.90D and 2.40D in the study eye, as determined by the Toric Calculator.
  • Subjects must have a minimum preoperative corneal astigmatism of 0.90 D in the study eye.
  • Subjects must have a dilated preoperative pupil size greater than or equal to 5.0 mm in the study eye.

Exclusion Criteria:

  • Subjects who have had previous intraocular or corneal surgery in the study eye.
  • Subjects with any clinically significant ocular pathology which would be expected to reduce potential BCDVA to 20/30 or worse in the study eye during the course of the study.
  • Subjects with any anterior segment pathology in the study eye likely to increase the risk of complications from phacoemulsification cataract surgery.
  • Subjects with associated ocular conditions which could affect the stability of the IOL in the study eye.
  • Subjects with a traumatic cataract in the study eye.
  • Subjects with uncontrolled glaucoma in the study eye.
  • Subjects with clinically significant irregular corneal astigmatism in the study eye, as determined by the medical judgment of the Investigator.
  • Subjects with clinically significant corneal pathology potentially affecting topography of either eye.
  • Subjects with any ocular condition that could prevent the possibility of a visual outcome better than 20/30 in the study eye.
  • Subjects with a difference of greater than 0.50D of corneal astigmatism as measured with the IOL Master and the topographer in the study eye using vector analysis.
  • Subjects with an anterior chamber depth <2mm in the study eye.
  • Subjects with potential BCDVA of 20/200 or worse in the fellow eye.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: enVista® One-Piece Hydrophobic Acrylic Toric IOL
Toric cylinder power of either 1.25 diopters (D), 2.00 D, or 2.75 D
Device: enVista® One-Piece Hydrophobic Acrylic Toric IOL
Test lens having a toric cylinder power of either 1.25 diopters (D), 2.00 D, or 2.75 D
Experimental: enVista control lens
Spherical control lens
Device: enVista control lens
Spherical Control lens

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Mean Dioptric Change in Cylinder
Time Frame: Baseline, Final Visit (scheduled within window: days 120-180)
Dioptric change in cylinder from the preoperative keratometric cylinder magnitude to postoperative manifest refraction cylinder magnitude (referenced to the corneal plane).
Baseline, Final Visit (scheduled within window: days 120-180)
Percentage of Participants With Intraocular Lens (IOL) Rotation of Less Than or Equal to Five Degrees
Time Frame: Form 3 Visit (window: days 30-60), Final Visit (window: days 120-180)
Intraocular Lens (IOL) rotation of less than or equal to five degrees between Forms 3 (scheduled within window: days 30-60) and final visit (scheduled within window: days 120-180).
Form 3 Visit (window: days 30-60), Final Visit (window: days 120-180)
Mean Best-corrected Distance Visual Acuity (BCDVA) at Final Visit
Time Frame: Final Visit (scheduled within window: days 120-180)
Best-corrected distance visual acuity (BCDVA) at Final Visit, expressed as logarithm of the minimum angle of resolution (logMAR). Corrected means spectacle corrected. Visual acuity (VA) was reported as letters read correctly, and the letters read were converted to logarithm of the minimum angle of resolution (logMAR) acuity. The participant read rows of letters on a standard LogMAR chart until the participant misses 3 letters on a row with 5 letters. The total number of correct letters were recorded. A decrease in the number of correct letters indicates a decrease in visual acuity.
Final Visit (scheduled within window: days 120-180)
Percentage of Participants With Reduction in Cylinder Within 0.50 Diopter (D) and Within 1.00 D of Intended.
Time Frame: Final Visit (scheduled within window: days 120-180)
Final Visit (scheduled within window: days 120-180)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Mean Uncorrected Distance Visual Acuity (UCDVA) at Final Visit
Time Frame: Final Visit (scheduled within window: days 120-180)
Uncorrected distance visual acuity (UCDVA), expressed as logarithm of the minimum angle of resolution (logMAR). Uncorrected means not spectacle-corrected. Visual acuity (VA) was reported as letters read correctly, and the letters read were converted to logarithm of the minimum angle of resolution (logMAR) acuity. The participant read rows of letters on a standard LogMAR chart until the participant misses 3 letters on a row with 5 letters. The total number of correct letters were recorded. A decrease in the number of correct letters indicates a decrease in visual acuity.
Final Visit (scheduled within window: days 120-180)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Bausch & Lomb Incorporated

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Mark Packer, MD, Bausch & Lomb Incorporated

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 6, 2013

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 18, 2016

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2016

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 9, 2013

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 9, 2013

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 13, 2013

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 16, 2020

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 28, 2020

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 761

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Yes

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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