An observational study in Intellectual Disability, sponsored by National Taiwan University Hospital. Recruiting at 2 sites in Taiwan. Open to participants aged 20 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-04-24.
Sponsored by National Taiwan University Hospital · Observational
Background:
Around 15% of the global population has some form of disability. Rights to obtain proper health care is an emphasis in the United Nationals Convention on the Right of People with Disability. Due to the importance of improving vision health for people with disabilities, studies on how to identify vision problems becomes extremely important in policy formulation for all countries. Among all types of disabilities, people with intellectual disability (ID) are among the ones where vision problems are the hardest to detect.
Currently, no caregiver assessable scales are available, as a result, adults with ID are at high risk of delayed diagnose for common ocular conditions. Objectives: This is a one-year project.
The objective of this study is two folds:
387 studies on the registry are indexed under Intellectual Disability; 105 are open to participants now.
This study's planned enrollment of 1,400 is above the median of 150 across 125 observational studies indexed under Intellectual Disability.
Browse Intellectual Disability studies →National Taiwan University Hospital is the lead sponsor of 2,615 studies on the registry; 576 are open to participants now.
Of its 11 completed or terminated interventional studies of FDA-regulated products, 2 (18%) have results posted.
Counted across the registry records on this site, refreshed daily.
Intellectual disability
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Other: no intervention
no intervention
Collection of Socioeconomic Data for Individuals with Disabilities
This study collects basic socioeconomic data of individuals with disabilities through tailored questionnaires, including gender, date of birth, educational background, living conditions, and employment status. The questionnaire is designed to accommodate the specific characteristics of individuals with intellectual disabilities and is completed by respondents or their proxies. These data will be analyzed to understand the impact of socioeconomic factors on the visual health and accessibility to medical services for people with disabilities. Ethical guidelines are strictly followed to ensure confidentiality and protect participant rights.
Time frame: 1-3 months
Assessment Scales for Individuals with Disabilities
This study utilizes validated assessment tools to evaluate the visual functions and daily living abilities of individuals with disabilities. These include the Activities of Daily Living (ADL) Scale and Instrumental Activities of Daily Living (IADL) Scale, supplemented by specific observational items for visual health and related functional behaviors. The scales employ a graded scoring system covering personal hygiene, mobility, social interaction, and visual challenges. The collected data will help analyze the impact of visual impairment on independent living skills and support the development of tailored visual intervention strategies. Participant privacy and ethical compliance are rigorously maintained.
Time frame: 1-3 months
Ophthalmologic Examination Form
A standardized ophthalmologic examination form is employed in this study to record detailed visual and eye health data of individuals with disabilities. The form includes uncorrected and corrected visual acuity, intraocular pressure, eye movement, corneal conditions, iris, macula, retina, and other ocular components. It also documents spherical power, cylindrical power, and axis to assess refractive correction needs. The form provides a section for medical recommendations such as eyeglass prescription, medical referral, or regular follow-up. These comprehensive data support analysis of visual problems' effects on individuals and guide the formulation of personalized visual intervention plans.
Time frame: 1-3 months
Started Apr 2024 (actual). Primary completion is estimated for Jan 2027, 33 months after the start.
Of 47 non-industry observational studies under Intellectual Disability, half reached primary completion within 59 months of starting (the median), counting those still running; a quarter within 19 and three quarters within 203. This study's planned 33 months is below that.
Counting every sponsor, half of 48 studies reached it within 59 months; a quarter within 19 and three quarters within 203.
How these figures are worked out, and which studies are left out of them.
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
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