This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Surgeon Experience ReSTOR A +4 Intraocular Lens (IOL)

This study has been completed.
Information provided by (Responsible Party):
Alcon Research Identifier:
First received: August 8, 2008
Last updated: February 23, 2017
Last verified: April 2010
To collect visual outcome data post AcrySof ReSTOR Aspheric +4 implantation from surgeons throughout the United States.

Condition Intervention
Cataract Device: ReSTOR

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Retrospective
Official Title: Surgeon Experience ReSTOR Aspheric +4 Intraocular Lens (IOL)

Resource links provided by NLM:

Further study details as provided by Alcon Research:

Primary Outcome Measures:
  • Visual Acuity [ Time Frame: 1 week to 10 months ]
    Uncorrected Visual Acuity (UCVA) and Best Spectacle Corrected Visual Acuity (BSCVA) at distance (4 meters) and near at preferred distance and measured by logMAR. LogMAR is the "logarithm of the minimum angle of resolution". It is a unit of measure for visual acuity (VA). A lower logMAR value indicates better visual acuity.

Secondary Outcome Measures:
  • Contrast Sensitivity [ Time Frame: 1 week to 10 months ]
    Contrast sensitivity is the measurement of how faded an image may become before it is indistinguishable. Contrast sensitivity was measured in photopic, mesopic, and mesopic with glare conditions at the following spatial frequencies: 1.5, 3, 6, 12, and 18 cpd (cycles per degree). Contrast sensitivity is measured in log units. A higher value for the logarithmic units translates to better contrast sensitivity.

Enrollment: 146
Study Start Date: June 2007
Study Completion Date: March 2008
Primary Completion Date: March 2008 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
AcrySof ReSTOR Aspheric +4 Intraocular Lens (IOL)
Device: ReSTOR
Patients were implanted with the AcrySof ReSTOR Aspheric +4 Intraocular Lens (IOL) in one or both eyes for treatment of cataract.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Subjects were selected from primary care clinics.

Inclusion Criteria:

  • operable cataracts; candidate for presbyopic correcting intraocular lens (IOL)

Exclusion Criteria:

  • ocular comorbidities confounding study outcomes
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00733512

United States, Texas
Alcon Call Center for Trial Locations
Fort Worth, Texas, United States, 76134
Sponsors and Collaborators
Alcon Research
  More Information

Responsible Party: Alcon Research Identifier: NCT00733512     History of Changes
Other Study ID Numbers: M07-019
Study First Received: August 8, 2008
Results First Received: March 24, 2010
Last Updated: February 23, 2017

Keywords provided by Alcon Research:
ReSTOR Aspheric +4 IOL

Additional relevant MeSH terms:
Lens Diseases
Eye Diseases processed this record on August 17, 2017