NCT01787760

Brief Summary

This study is to investigate whether novel soft contact lens optical designs can slow myopia progression.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
221

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Apr 2007

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 1, 2007

Completed
3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2010

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2010

Completed
2.9 years until next milestone

First Submitted

Initial submission to the registry

February 6, 2013

Completed
5 days until next milestone

First Posted

Study publicly available on registry

February 11, 2013

Completed
2.5 years until next milestone

Results Posted

Study results publicly available

July 29, 2015

Completed
Last Updated

June 19, 2018

Status Verified

April 1, 2018

Enrollment Period

3 years

First QC Date

February 6, 2013

Results QC Date

July 1, 2015

Last Update Submit

June 18, 2018

Conditions

Outcome Measures

Primary Outcomes (2)

  • Axial Length (Axial Elongation)

    Axial Length was measured with the IOLMaster at baseline, and then every 6 months throughout the course of the study. Five measurements were collected for each eye at each visit and the average of the 5 measurements were used for the analysis. Higher values of axial elongation indicate worse vision.

    Baseline and every 6 months post-baseline up to 3 years

  • Spherical Equivalent Refraction

    Spherical Equivalent Refraction was computed from the sphero-cylindrical refraction measured with an open-field auto refractor. The median of 3 repeated measurements, each of which was the average of 3 consecutive readings, was used for the analysis. Higher values of spherical refraction indicate progression in Myopia.

    Baseline and every 6 months post-baseline up to 3 years

Study Arms (3)

Test Soft Contact Lens B

EXPERIMENTAL

Lenses will be worn in a daily disposable modality

Device: Test Soft Contact Lens B

Test Soft Contact Lens C

EXPERIMENTAL

Lenses will be worn in a daily disposable modality

Device: Test Soft Contact Lens C

Spectacle Lenses

ACTIVE COMPARATOR

Control spectacle lenses worn daily.

Device: Active Comparator

Interventions

Test lenses to be worn in daily wear modality

Test Soft Contact Lens B

Test lenses to be worn in a daily wear modality

Test Soft Contact Lens C

Control spectacle lenses to be worn in a daily wear modality

Spectacle Lenses

Eligibility Criteria

Age8 Years - 12 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17)

You may qualify if:

  • The subject must be between 8 and 12 years of age and of Asia origin.
  • The subject's best sphere contact lens correction must lie between -0.75D (best of the two eyes) and -5.00D (worst of the two eyes)
  • Astigmatism must be less than or equal to 1.00D
  • Less than 1.00D difference in spherical equivalent between the two eyes
  • The subject must have a best-corrected visual acuity of 20/25 and spherical equivalent refraction visual acuity of 20/25 or better in both eyes
  • The subject must have at least 8D of accommodation.
  • The subject's parent or legal guardian must read and sign the STATEMENT OF INFORMED CONSENT and the subject must read and sign the Child's Assent Form and be provided a copy of each form
  • The subject must appear able and willing to adhere to the instructions set forth in the clinical protocol

You may not qualify if:

  • Ocular or systemic allergies or diseases that may interfere with contact lens wear
  • Systemic disease or autoimmune disease or use of medication (e.g. antihistamines), which may interfere with contact lens wear.
  • Clinically significant (grade 3 or 4) tarsal abnormalities or bulbar injection that might interfere with contact lens wear.
  • Clinically significant (grade 3 or 4) corneal edema, corneal vascularization, corneal staining, or any other abnormality of the cornea, which may contraindicate contact lens wear.
  • Any ocular infection.
  • Any corneal distortion resulting from previous hard or rigid gas permeable contact lens wear.
  • Any infectious disease (e.g. hepatitis, tuberculosis) or immunosuppressive disease (e.g. HIV).
  • Diabetes.
  • Anismetropia.
  • Astigmatism of greater than 1.00D in either eye.
  • Eye injury or eye surgery within eight weeks immediately prior to enrollment for this study.
  • Previous refractive surgery, rigid contact lens wear, orthokeratology, keratoconus, or other corneal irregularity in either eye
  • Strabismus in either eye
  • Pupil or lid abnormality or infection in either eye
  • Central corneal scar and aphakia in either eye
  • +4 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

The Hong Kong Polytechnic University

Hung Hom, Kowloon, Hong Kong

Location

MeSH Terms

Conditions

Myopia

Condition Hierarchy (Ancestors)

Refractive ErrorsEye Diseases

Results Point of Contact

Title
XU CHENG, PRINCIPAL CLINICAL SCIENTIST
Organization
Vistakon, USA

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
INVESTIGATOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

February 6, 2013

First Posted

February 11, 2013

Study Start

April 1, 2007

Primary Completion

April 1, 2010

Study Completion

April 1, 2010

Last Updated

June 19, 2018

Results First Posted

July 29, 2015

Record last verified: 2018-04

Locations