StrabismusNCT01608828
Assessing the Functional and Psychosocial Impact of Strabismus in Asian Children Using the AS-20 and IXTQ Questionnaires
An observational study of Strabismus, run by Singapore National Eye Centre at 1 site in Singapore.
Trial summary
Studies suggest that strabismus has a negative impact on a person's self-image, interpersonal relationships, emotional and psychosocial state (4-15). There are, however, few such studies based in Asia, and the functional and psycho-social impact of disease is often neglected in our management of strabismus in… Read more about this study
- Who is it for?
- Ages 5 to 16 yearsHealthy volunteers can take part
- Conditions the study is for
- Strabismus
- How many people
- 120 participants
- Where
- 1 siteSingapore
- Study dates
- May 2012to May 2014
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 5 to 16 years
- All sexes
- Healthy volunteers accepted
- Child
Study population: Children with strabismus
Who may be able to join
- Children aged 5 to 16 years (inclusive) with strabismus or age-matched controls without strabismus/amblyopia
- Any tropia
- Willingness of children or parents willing to complete questionnaires
- Parents with sufficient reading skills to complete the English written IXTQ and AS20
- Parent/guardian able to provide informed consent
Who cannot join
- Children with poor vision (VA worse than 6/7.5) in either eye
- Children with any ocular, neurological or syndromic problems
- Children with developmental delay or mental impairment
- Children from overseas (not residing in Singapore)
Trial locations and contacts
1 site in 1 country.
About this study
Studies suggest that strabismus has a negative impact on a person's self-image, interpersonal relationships, emotional and psychosocial state (4-15). There are, however, few such studies based in Asia, and the functional and psycho-social impact of disease is often neglected in our management of strabismus in Singapore. The aim of this pilot study is to measure quality-of-life (QOL) among strabismic children in Singapore so as to better understand the functional and psychosocial issues faced by these children in their daily living. The investigators also hope to evaluate the performance of the Intermittent Exotropia Questionnaire (IXTQ) (2) and Adult Strabismus Quality of Life Questionnaire (AS-20) (1) and to determine if differences between child and parental perceptions exist.
60 children with strabismus presenting to the KKWCH Eye Centre and their parents will be invited to participate in the study and answer questions in 2 Pediatric Eye Disease Investigator Group (PEDIG)-validated questionnaires (i.e. the IXTQ and AS-20). 30 children aged 5-7 years will answer the 12-question IXTQ (5-7 years), while 30 children aged 8-16 years will answer the 12-question IXTQ (8-16 years) and the 20-question AS-20 questionnaires. Their parents will answer the self-administered IXTQ child-proxy (12 questions), IXTQ parental (17 questions) and modified AS20 child-proxy questionnaires (20 questions). For comparison, 60 aged-matched children without strabismus or amblyopia (30 aged 5-7 years, and 30 aged 8-16) and their parents will also be invited to answer similar questionnaires (controls).
Results will be analysed question-by-question and then by composite score, and comparison will be made between child and parental-proxy measures, as well as with scores obtained from myopic children. It is hoped, that from this study, we will be able to assess the usefulness of the IXTQ and AS-20 instruments as measures of QOL in strabismic children, and to assess the feasibility of its use in a larger study looking at the impact of strabismus and its treatment in Singaporean children.
- Conditions
- Strabismus
- Medical subject headings
- Strabismus
What is being measured
The primary outcome is the main question the study is designed to answer.
Quality of life in Asian children with strabismus
Measured: 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted31 May 2012 (estimated)
- Study startMay 2012
- Primary completionMay 2014
- Study completionMay 2014
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for StrabismusStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 120 participants (actual)
Sponsor and investigators
- Lead sponsor
- Singapore National Eye Centre
- Sponsor type
- Other government
- Responsible party
- Principal investigator, Audrey Wei-Lin Chia, Singapore National Eye Centre
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01608828
- Sponsor's protocol ID
- 2012/350/A
- Status last verified
- May 2017
- First submitted
- 28 May 2012
- Last updated
- 3 May 2017
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 3 May 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Assessing the Functional and Psychosocial Impact of Strabismus in Asian Children Using the AS-20 and IXTQ Questionnaires
- ClinicalTrials.gov ID
- NCT01608828
- Acronym / sponsor ID
- 2012/350/A
- Conditions
- Strabismus
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 120 participants (actual)
- Lead sponsor
- Singapore National Eye CentreOther government
- Study start
- May 2012 (actual)
- Primary completion
- May 2014 (actual)
- Study completion
- May 2014 (actual)
- First posted
- 31 May 2012 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Studies suggest that strabismus has a negative impact on a person's self-image, interpersonal relationships, emotional and psychosocial state (4-15). There are, however, few such studies based in Asia, and the functional and psycho-social impact of disease is often neglected in our management of strabismus in Singapore. The aim of this pilot study is to measure quality-of-life (QOL) among strabismic children in Singapore so as to better understand the functional and psychosocial issues faced by these children in their daily living. The investigators also hope to evaluate the performance of the Intermittent Exotropia Questionnaire (IXTQ) (2) and Adult Strabismus Quality of Life Questionnaire (AS-20) (1) and to determine if differences between child and parental perceptions exist.
60 children with strabismus presenting to the KKWCH Eye Centre and their parents will be invited to participate in the study and answer questions in 2 Pediatric Eye Disease Investigator Group (PEDIG)-validated questionnaires (i.e. the IXTQ and AS-20). 30 children aged 5-7 years will answer the 12-question IXTQ (5-7 years), while 30 children aged 8-16 years will answer the 12-question IXTQ (8-16 years) and the 20-question AS-20 questionnaires. Their parents will answer the self-administered IXTQ child-proxy (12 questions), IXTQ parental (17 questions) and modified AS20 child-proxy questionnaires (20 questions). For comparison, 60 aged-matched children without strabismus or amblyopia (30 aged 5-7 years, and 30 aged 8-16) and their parents will also be invited to answer similar questionnaires (controls).
Results will be analysed question-by-question and then by composite score, and comparison will be made between child and parental-proxy measures, as well as with scores obtained from myopic children. It is hoped, that from this study, we will be able to assess the usefulness of the IXTQ and AS-20 instruments as measures of QOL in strabismic children, and to assess the feasibility of its use in a larger study looking at the impact of strabismus and its treatment in Singaporean children.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
Who may qualify
- Ages
- 5 to 16 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child
- Study population
- Children with strabismus
Key inclusion criteria (5 listed)
- Children aged 5 to 16 years (inclusive) with strabismus or age-matched controls without strabismus/amblyopia
- Any tropia
- Willingness of children or parents willing to complete questionnaires
- Parents with sufficient reading skills to complete the English written IXTQ and AS20
- Parent/guardian able to provide informed consent
Key exclusion criteria (4 listed)
- Children with poor vision (VA worse than 6/7.5) in either eye
- Children with any ocular, neurological or syndromic problems
- Children with developmental delay or mental impairment
- Children from overseas (not residing in Singapore)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Quality of life in Asian children with strabismus
Time frame: 1 year
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 3 May 2017.
Related trials for Strabismus
Not yet recruiting
Comparative Study Of Combined Recession-Resection And Fenestration of Superior Rectus Muscle for Treatment of Dissociated Vertical Deviation
Dissociated Vertical Deviation
RecruitingObservational study
Intraoperative OCT Guidance of Intraocular Surgery II
Macular Holes, Epiretinal Membrane
Not yet recruitingPhase 4
Effect of Ketamine-Propofol Total Intravenous Anesthesia Versus Sevoflurane-Based Anesthesia on Postoperative Vomiting in Children Undergoing Strabismus Surgery
Postoperative Vomiting, Postoperative Nausea and Vomiting
RecruitingObservational study
Eye-Hand Cross-Dominance and Upper Extremity Performance in Volleyball Players
Volleyball Player
Recruiting
Vision Therapy Versus Prism Treatment in Small-angle Acute Acquired Concomitant Esotropia
Esotropia
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Strabismus, run by Singapore National Eye Centre at 1 site in Singapore.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 3 May 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Singapore. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Quality of life in Asian children with strabismus (time frame: 1 year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 May 2017.