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CompletedNCT01464255Updated Aug 19, 2014Results posted

Comparative Study of Two Marketed 1-day Soft Contact Lenses

An interventional study of ocufilcon D and ocufilcon B in Myopia, sponsored by CooperVision International Limited (CVIL). Completed at 1 site in United States. Open to participants aged 18 Years to 40 Years. Per ClinicalTrials.gov, last updated 2014-08-19.

Sponsored by CooperVision International Limited (CVIL) · Not applicable and Interventional

Phase
Not applicable
Study type
Interventional
Enrollment
71
Allocation
Randomized
Ages
18 Years to 40 Years
Sex
All
01

Study summary

This study is designed to evaluate ocufilcon D lens compared to ocufilcon B lens in a 1-week crossover, daily wear regimen.

Read the detailed description

This study is designed to evaluate 2 daily disposable contact lenses that are both currently cleared for the USA market. Study of the ocufilcon D lens compared to the ocufilcon B lens in a 1-week crossover, daily wear regimen. The primary objective is the comparison of fitting characteristics. The secondary objective is the comparison of comfort, end of day comfort and dryness measures.

02

Conditions studied

  • Myopia

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Keywords

  • contact lenses
03

In context

Myopia

984 studies on the registry are indexed under Myopia; 209 are open to participants now.

This study's enrollment of 71 is below the median of 80 across 782 interventional studies indexed under Myopia.

Browse Myopia studies →

Lead sponsor

CooperVision International Limited (CVIL) is the lead sponsor of 138 studies on the registry; 9 are open to participants now.

Of its 72 completed or terminated interventional studies of FDA-regulated products, 67 (93%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 40 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Has had a self reported oculo-visual examination in the last two years.
  • Is able to wear the study lenses for at least eight hours a day, seven days a week
  • Aged 18-40 years and has full legal capacity as a volunteer
  • Has a distance contact lens prescription from -0.25 and -6.00D inclusive
  • Has spectacle astigmatism of \< 1.00D in each eye
  • Baseline vision of 20/20 best-corrected in each eye.
  • Is correctable to at least 20/25 distance visual acuity with study contact lenses in each eye
  • Has read and understood the consent form and willing to sign consent form
  • Willing and able to follow participant instructions and attend the required study visits Has worn soft contact lenses for at least two weeks prior to the study (daily wear only).

Exclusion criteria

Exclusion Criteria:

  • Currently wears contact lenses on an extended wear basis.
  • Not a current or past wearer of the ocufilcon B 52% 1-day lenses.
  • Has undergone anterior ocular surgery
  • Is aphakic
  • Has never worn contact lenses before
  • Has any systemic disease which clinically contraindicates contact lenses
  • Has active ocular disease or severe insufficiency of lacrimal secretion (dry eye)
  • Use of systemic or topical medications that will affect ocular health or visual performance
  • Slit lamp findings with a grading of greater than 1.0 using the grading scales in Appendix 3
  • Not possible to achieve a satisfactory fit with the lens design used in the study
  • Has keratoconus or other corneal irregularity
  • Participating in another eye-related clinical trial
  • Pregnant, lactating or planning a pregnancy
05

Study design

Phase
Not applicable
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Single (Participant)
Enrollment
71 participants (actual)

Study arms

  • Experimental
    ocufilcon D

    Participants wear a first pair of lenses for one week and then crossover and wear an alternate second pair of lenses for one week.

    Device: ocufilcon B

  • Active comparator
    ocufilcon B

    Participants wear a first pair of lenses for one week and then crossover and wear an alternate second pair of lenses for one week.

    Device: ocufilcon D

Interventions

  • Deviceocufilcon D

    Participants wear a first pair of lenses for one week and then crossover and wear an alternate second pair of lenses for one week.

    Also known as: oculfilcon D (Daily wear soft contact lens)

  • Deviceocufilcon B

    Participants wear a first pair of lenses for one week and then crossover and wear an alternate second pair of lenses for one week.

    Also known as: oculfilcon B (Daily wear soft contact lens)

06

What researchers measure

Primary outcomes

  1. Lens Fit - Decentration After Insertion

    The ophthalmologist's objective assessment of lens fit measurement of decentration after insertion (20 minutes settling) of Pair #1 (measured at baseline visit) and Pair #2 (measured at 7 days after baseline visit). (mm, horizontal and vertical).

    Time frame: Baseline and 7 days from baseline visit

  2. Lens Fit - Decentration at One Week

    The ophthalmologist's objective assessment of lens fit measurement of decentration of Pair #1 (measured at 7 days after baseline visit) and Pair #2 (measured at 14 days after baseline visit). Each pair worn for one week daily disposable wear basis (at least 8 hours per day, 7 days per week). Lenses worn minimum 2 hours prior to visit. (mm, horizontal and vertical).

    Time frame: 7 days and 14 days from baseline visit

  3. Lens Fit - Tightness After Insertion

    The ophthalmologist's rating of lens fit measurement of push-up tightness after insertion (20 minutes settling) of Pair #1 (measured at baseline visit) and Pair #2 (measured at 7 days after baseline visit). (0-100%, 5% steps, 0%=excessively loose, 50%=optimum, 100%=excessively tight ).

    Time frame: Baseline and 7 days from baseline visit

  4. Lens Fit - Tightness at One Week

    The ophthalmologist's rating of lens fit measurement of push-up tightness of Pair #1 (measured at 7 days after baseline visit) and Pair #2 (measured at 14 days after baseline visit). Each pair worn for one week daily disposable wear basis (at least 8 hours per day, 7 days per week). Lenses worn minimum 2 hours prior to visit. (0-100%, 5% steps, 0%=excessively loose, 50%=optimum, 100%=excessively tight ).

    Time frame: 7 days and 14 days from baseline visit

  5. Lens Fit - Post-Blink Lens Movement After Insertion

    The ophthalmologist's objective assessment of lens fit measurement of post-blink lens movement after insertion (20 minutes settling) of Pair #1 (measured at baseline visit) and Pair #2 (measured at 7 days after baseline visit). (mm).

    Time frame: Baseline and 7 days from baseline visit

  6. Lens Fit - Post-Blink Lens Movement Prior to Removal

    The ophthalmologist's objective assessment of lens fit measurement of post-blink lens movement prior to removal of Pair #1 (measured at 7 days after baseline visit) and Pair #2 (measured at 14 days after baseline visit). (mm).

    Time frame: 7 days and 14 days from baseline visit

Secondary outcomes

  1. Overall Preference - Comfort After Insertion

    Participant's subjective rating for overall preference of lens comfort immediately after insertion for lens pair #1 or Pair #2. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

    Time frame: 14 days from baseline visit

  2. Overall Preference - Comfort Before Removal

    Participant's subjective rating for overall preference of lens comfort immediately before removal for lens pair #1 or Pair #2. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

    Time frame: 14 days from baseline visit

  3. Overall Preference - Dryness After Insertion

    Participant's subjective rating for overall preference of lens dryness immediately after insertion for lens pair #1 or Pair #2. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

    Time frame: 14 days from baseline visit

  4. Overall Preference - Dryness Before Removal

    Participant's subjective rating for overall preference of lens dryness immediately before removal for lens pair #1 or Pair #2. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

    Time frame: 14 days from baseline visit

  5. Overall Preference - Handling, Inserting

    Participant's subjective rating for overall preference of lens ease of handling at inserting for lens pair #1 or Pair #2. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

    Time frame: 14 days from baseline visit

  6. Overall Preference - Handling, Removing

    Participant's subjective rating for overall preference of lens ease of handling at removing for lens pair #1 or Pair #2. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

    Time frame: 14 days from baseline visit

  7. Overall Lens Pair Preference

    Participant's subjective rating for overall preference for lens pair #1 or Pair #2 based on comfort, vision and handling. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

    Time frame: 14 days from baseline visit

07

Results

Posted Aug 19, 2014

Participant flow

A total of 71 subjects were recruited for the study, with 21 subjects being disqualified at the initial screening for a total of 50 subjects started.

Participant flow — Overall Study
MilestoneOcufilcon D Then Ocufilcon BOcufulcon B Then Ocufilcon D
Started2525
Completed2524
Not completed01
Withdrew: Unresolve corneal staining01

Outcome measures

PrimaryLens Fit - Decentration After Insertion

The ophthalmologist's objective assessment of lens fit measurement of decentration after insertion (20 minutes settling) of Pair #1 (measured at baseline visit) and Pair #2 (measured at 7 days after baseline visit). (mm, horizontal and vertical).

Time frame:
Baseline and 7 days from baseline visit
Reported as:
Mean · mm
Lens Fit - Decentration After Insertion
mmOcufilcon D Then Ocufilcon BOcufilcon B Then Ocufilcon D
Horizontal0.12 ± 0.290.07 ± 0.30
Vertical-0.11 ± 0.47-0.15 ± 0.48
PrimaryLens Fit - Decentration at One Week

The ophthalmologist's objective assessment of lens fit measurement of decentration of Pair #1 (measured at 7 days after baseline visit) and Pair #2 (measured at 14 days after baseline visit). Each pair worn for one week daily disposable wear basis (at least 8 hours per day, 7 days per week). Lenses worn minimum 2 hours prior to visit. (mm, horizontal and vertical).

Time frame:
7 days and 14 days from baseline visit
Reported as:
Mean · mm
Lens Fit - Decentration at One Week
mmOcufilcon D Then Ocufilcon BOcufilcon B Then Ocufilcon D
Horizontal0.14 ± 0.360.09 ± 0.37
Vertical-0.08 ± 0.39-0.18 ± 0.51
PrimaryLens Fit - Tightness After Insertion

The ophthalmologist's rating of lens fit measurement of push-up tightness after insertion (20 minutes settling) of Pair #1 (measured at baseline visit) and Pair #2 (measured at 7 days after baseline visit). (0-100%, 5% steps, 0%=excessively loose, 50%=optimum, 100%=excessively tight ).

Time frame:
Baseline and 7 days from baseline visit
Reported as:
Mean · percentage of tightness
Lens Fit - Tightness After Insertion
percentage of tightnessOcufilcon D Then Ocufilcon BOcufilcon B Then Ocufilcon D
Lens Fit - Tightness After Insertion50.0 ± 14.152.4 ± 15.7
PrimaryLens Fit - Tightness at One Week

The ophthalmologist's rating of lens fit measurement of push-up tightness of Pair #1 (measured at 7 days after baseline visit) and Pair #2 (measured at 14 days after baseline visit). Each pair worn for one week daily disposable wear basis (at least 8 hours per day, 7 days per week). Lenses worn minimum 2 hours prior to visit. (0-100%, 5% steps, 0%=excessively loose, 50%=optimum, 100%=excessively tight ).

Time frame:
7 days and 14 days from baseline visit
Reported as:
Mean · percentage of tightness
Lens Fit - Tightness at One Week
percentage of tightnessOcufilcon D Then Ocufilcon BOcufilcon B Then Ocufilcon D
Lens Fit - Tightness at One Week42.4 ± 12.946 ± 13.7
SecondaryOverall Preference - Comfort After Insertion

Participant's subjective rating for overall preference of lens comfort immediately after insertion for lens pair #1 or Pair #2. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

Time frame:
14 days from baseline visit
Reported as:
Number · percentage of participants
Overall Preference - Comfort After Insertion
percentage of participantsOverall Study Group
Strongly Prefer Test Lenses43
Slightly Prefer Test Lenses21
No Preference18
Slightly Prefer Control Lenses16
Strongly Prefer Control Lenses2
SecondaryOverall Preference - Comfort Before Removal

Participant's subjective rating for overall preference of lens comfort immediately before removal for lens pair #1 or Pair #2. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

Time frame:
14 days from baseline visit
Reported as:
Number · percentage of participants
Overall Preference - Comfort Before Removal
percentage of participantsOverall Study Group
Strongly Prefer Test Lenses29
Slightly Prefer Test Lenses29
No Preference18
Slightly Prefer Control Lenses20
Strongly Prefer Control Lenses4
SecondaryOverall Preference - Dryness After Insertion

Participant's subjective rating for overall preference of lens dryness immediately after insertion for lens pair #1 or Pair #2. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

Time frame:
14 days from baseline visit
Reported as:
Number · percentage of participants
Overall Preference - Dryness After Insertion
percentage of participantsOverall Study Group
Strongly Prefer Test Lenses23
Slightly Prefer Test Lenses12
No Preference55
Slightly Prefer Control Lenses10
Strongly Prefer Control Lenses0
SecondaryOverall Preference - Dryness Before Removal

Participant's subjective rating for overall preference of lens dryness immediately before removal for lens pair #1 or Pair #2. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

Time frame:
14 days from baseline visit
Reported as:
Number · percentage of participants
Overall Preference - Dryness Before Removal
percentage of participantsOverall Study Group
Strongly Prefer Test Lenses33
Slightly Prefer Test Lenses22
No Preference25
Slightly Prefer Control Lenses18
Strongly Prefer Control Lenses2
SecondaryOverall Preference - Handling, Inserting

Participant's subjective rating for overall preference of lens ease of handling at inserting for lens pair #1 or Pair #2. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

Time frame:
14 days from baseline visit
Reported as:
Number · percentage of participants
Overall Preference - Handling, Inserting
percentage of participantsOverall Study Group
Strongly Prefer Test Lenses18
Slightly Prefer Test Lenses23
No Preference47
Slightly Prefer Control Lenses8
Strongly Prefer Control Lenses4
SecondaryOverall Preference - Handling, Removing

Participant's subjective rating for overall preference of lens ease of handling at removing for lens pair #1 or Pair #2. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

Time frame:
14 days from baseline visit
Reported as:
Number · percentage of participants
Overall Preference - Handling, Removing
percentage of participantsOverall Study Group
Strongly Prefer Test Lenses8
Slightly Prefer Test Lenses16
No Preference74
Slightly Prefer Control Lenses2
Strongly Prefer Control Lenses0
SecondaryOverall Lens Pair Preference

Participant's subjective rating for overall preference for lens pair #1 or Pair #2 based on comfort, vision and handling. Surveyed at 14 days after baseline visit. (Each pair worn for one week daily disposable wear basis, at least 8 hours per day, 7 days per week). Rated by Likert scale, (forced choices - Strongly Prefer New Lenses (Week 2), Slightly Prefer New Lenses (Week 2), No Preference, Slightly Prefer Previous Lenses (Week 1), Strongly Prefer Previous Lenses (Week 1). Reported as Strongly Prefer Test Lenses, Slightly Prefer Test Lenses, No Preference, Slightly Prefer Control Lenses, Strongly Prefer Control Lenses.

Time frame:
14 days from baseline visit
Reported as:
Number · percentage of participants
Overall Lens Pair Preference
percentage of participantsOverall Study Group
Strongly Prefer Test Lenses43
Slightly Prefer Test Lenses22
No Preference2
Slightly Prefer Control Lenses29
Strongly Prefer Control Lenses4
PrimaryLens Fit - Post-Blink Lens Movement After Insertion

The ophthalmologist's objective assessment of lens fit measurement of post-blink lens movement after insertion (20 minutes settling) of Pair #1 (measured at baseline visit) and Pair #2 (measured at 7 days after baseline visit). (mm).

Time frame:
Baseline and 7 days from baseline visit
Reported as:
Mean · mm
Lens Fit - Post-Blink Lens Movement After Insertion
mmOcufilcon D Then Ocufilcon BOcufilcon B Then Ocufilcon D
Lens Fit - Post-Blink Lens Movement After Insertion0.29 ± 0.280.3 ± 0.32
PrimaryLens Fit - Post-Blink Lens Movement Prior to Removal

The ophthalmologist's objective assessment of lens fit measurement of post-blink lens movement prior to removal of Pair #1 (measured at 7 days after baseline visit) and Pair #2 (measured at 14 days after baseline visit). (mm).

Time frame:
7 days and 14 days from baseline visit
Reported as:
Mean · mm
Lens Fit - Post-Blink Lens Movement Prior to Removal
mmOcufilcon D Then Ocufilcon BOcufilcon B Then Ocufilcon D
Lens Fit - Post-Blink Lens Movement Prior to Removal0.38 ± 0.320.48 ± 0.41

Adverse events

Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Ocufilcon D—0/50 (0%)0/50 (0%)
Ocufilcon B—0/50 (0%)0/50 (0%)

Baseline characteristics

1 subject being disqualified after 1 week of wear

Age, Categorical
Age, Categorical(Participants)Ocufilcon D Then Ocufilcon BOcufilcon B Then Ocufilcon DTotal
<=18 years000
Between 18 and 65 years252449
>=65 years000
Sex: Female, Male
Sex: Female, Male(Participants)Ocufilcon D Then Ocufilcon BOcufilcon B Then Ocufilcon DTotal
Female171532
Male8917
Region of Enrollment
Region of Enrollment(participants)Ocufilcon D Then Ocufilcon BOcufilcon B Then Ocufilcon DTotal
United States252449
08

Study locations

1 site
  • Clinical Research Center, U.C. Berkeley, School of Optometry
    Berkeley, California 94720-, United States
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 19, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01464255
Lead sponsor
CooperVision International Limited (CVIL)
Responsible party
Sponsor
First posted
Nov 3, 2011
Start date
Aug 2011
Primary completion
Oct 2011
Completion
Nov 2011
Results posted
Aug 19, 2014
Last update
Aug 19, 2014

Study contacts

Thao N Yeh, OD
principal investigator · U.C. Berkeley, School of Optometry

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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