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Multifocal Lens Centration and Its Effect on Visual Performance in a Presbyopic Population

NCT02228109 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 35

Last updated 2015-05-29

No results posted yet for this study

Summary

The purpose of this study is to use a corneal topographer, a device that is readily available in most optometric practices, in order to determine the position of the multifocal (MF) contact lens (CL) optics in relation to the optics of the eye. The specific purpose of this study is to evaluate if there is a relationship between the positioning of the optics of the study lenses and the objective and subjective visual performance as well as participant satisfaction. The MF CL lenses will be fitted to two groups of participants (previously unsuccessful vs. currently successful MF CL wearers).

HYPOTHESES

* The measurement of the power distribution acquired from the Medmont E300 corneal topographer is effective in determining MF CL lens centration and is a predictor of MF CL success.
* There is a difference in MF CL centration, determined by corneal topography, between successful and unsuccessful MF CL wearers.
* MF CL centration, determined by corneal topography, is correlated with visual performance, determined by ocular aberrometry, measures of visual acuity and subjective satisfaction.

Conditions

Interventions

DEVICE

Acuvue Oasys for Presbyopia

Acuvue Oasys for Presbyopia contact lenses worn

DEVICE

PureVision2 for Presbyopia

PureVision2 for Presbyopia contact lenses worn

DEVICE

Biofinity Multifocal

Biofinity Multifocal contact lenses worn

Sponsors & Collaborators

  • Johnson & Johnson Vision Care

    collaborator UNKNOWN

  • University of Waterloo

    lead OTHER

Principal Investigators

  • Lyndon Jones, PhD · CCLR, University of Waterloo

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
DOUBLE
Model
CROSSOVER

Eligibility

Min Age
42 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2014-12-31
Primary Completion
2015-04-30
Completion
2015-04-30

Countries

  • Canada

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02228109 on ClinicalTrials.gov