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Contact Lens in Pediatrics (CLIP) in an Asian Population Study (CLIP)

This study has been completed.
Information provided by:
Singapore National Eye Centre Identifier:
First received: May 14, 2007
Last updated: May 10, 2010
Last verified: May 2010
To evaluate the safety, efficacy and physiological performance of daily disposable spherical and toric soft contact lenses in a vision-corrected population of children ages 8-11 years of age. To evaluate the ability of the practitioner to fit these lenses and for the children to wear and manage these lenses.

Condition Intervention
Device: Johnson&Johnson Acuevue daily disposable lenses

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label

Resource links provided by NLM:

Further study details as provided by Singapore National Eye Centre:

Primary Outcome Measures:
  • i. demographics ii. refraction (D) visual acuity iii. AC/A Ratio (phorias in prism dioptres) iv. Keratometry v. Slit lamp examination vi. Corneal staining viii. Contact lens fit assessment [ Time Frame: December 2006 to July 2007 ]

Secondary Outcome Measures:
  • Questionaire filling by subject/parent [ Time Frame: Dec 2006 to July 2007 ]

Estimated Enrollment: 60
Study Start Date: December 2006
Study Completion Date: November 2008
Primary Completion Date: November 2008 (Final data collection date for primary outcome measure)
Detailed Description:

This is a bilateral, open-label dispensing evaluation of two daily lens types. Eligible subjects will wear the study lenses for 3-months daily wear. 1-Day Acuvue will be worn by spherical subjects and 1-Day Acuvue for Astigmatism will be worn by astigmats.

There is a total of 4 study visits (baseline, contact fitting and dispensing, 1 week, 1 month and 3 month follow-up). Tests conducted include manifest refraction and over-refraction, keratometry, visual acuity, ACA ratio, lens fit assessment, slit lamp biomicroscopy and parent/patient questionaires.

Each child was provided with a supply of lenses to last until the next scheduled follow-up visit, unit-dose rewetting drops for rinsing their lenses if necessary, and a daily log to complete each day until the next follow-up visit.

Informed consent was obtained from all subjects after the nature of the study had been fully explained. The study gained approval from the Ethics Committee of the Singapore Eye Research Institute.


Ages Eligible for Study:   8 Years to 11 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Be between 8-11 years of age.
  • Signed Written Informed Consent and/or have the consent of a parent or legal guardian and Investigator to record this on Case Report Form (CRF) in appropriate space.
  • Be a neophyte.
  • Require a visual correction in both eyes.
  • Require a soft contact lens spherical correction between +5.00 and -9.00 DS.
  • Have an astigmatic correction between 0.00 amd 2.00 DC.
  • Be able to wear the lens powers available for this study.
  • Be correctable to a visual acuity of 20/25 or better in each eye.
  • Have normal eyes with no evidence of abnormality or disease. For the purposes of this study a normal eye is defined as one having:

    (i)No amblyopia. (ii) No evidence of lid abnormality or infection. (eg. entropion, ectropion, chalazia, recurrent styes). (iii) No clinically significant slit lamp (eg. any infiltrates or other slit lamp findings Grade 3 or above: corneal edema, corneal staining, tarsal abnormalities, conjunctival injection, vascularisation, or abnormal opacities).(iv) No other active ocular disease. (eg. glaucoma, history of recurrent corneal erosions, cornea infiltrates, conjunctiva, lids, and intraocular infection or inflammation of an allergic, bacterial, or viral etiology.)

Exclusion Criteria:

  • Requires concurrent ocular medication.
  • Any systemic illness which would contraindicate lens wear or the medical treatment of which would affect vision or successful lens wear.
  • No clinically significant (Grade 3 or 4) slit lamp findings including corneal edema, corneal vascularization, corneal staining, tarsal abnormalities, bulbar injection, or any other abnormality of the cornea that would contraindicate contact lens wear.
  • Diabetic.
  • Infectious disease (eg.hepatitis, tuberculosis)or an immunosuppressive disease (eg.HIV).
  • PMMA or RGP lens wear in the previous 8 weeks.
  • Has had refractive surgery. Has had eye injury/surgery within 8 weeks immediately prior to enrollment for this study.
  • Abnormal lacrimal secretions.
  • Pre-existing ocular irritation that would preclude contact lens fitting.
  • Keratoconus or other corneal irregularity.
  • Pregnancy, lactating or planning a pregnancy at the time of enrollment only.
  • Participation in any concurrent clinical trial.
  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: NCT00473304

Singapore National Eye Centre
Singapore, Singapore
Sponsors and Collaborators
Singapore National Eye Centre
Principal Investigator: Li Lim, FRCS(Ed) Singapore Eye Research Institute