Prevalence of keratoconus in paediatric patients in Riyadh, Saudi Arabia.
Emilio Almeida Torres Netto, Wafa Majed Al-Otaibi, Nikki L Hafezi...
https://pubmed.ncbi.nlm.nih.gov/29298777Actively Recruiting
Age: 6Years - 23Years
All Genders
Healthy Volunteers
ID03115710
The K-Map Study, Global Prevalence of Keratoconus in Children and Adolescents
Led by University Hospital, Geneva · Updated on 2025-08-11
20000
Participants Needed
12
Research Sites
N/A
Total Duration
On this page
Sponsors
U
University Hospital, Geneva
Lead Sponsor
E
ELZA Institute
Collaborating Sponsor
AI-Summary
What this Trial Is About
Keratoconus is an eye condition that causes changes in the shape of the cornea, often affecting both eyes unevenly and leading to vision problems. This research aims to find out how common keratoconus is among children and teenagers worldwide. Researchers believe that the number of people with keratoconus may be higher than previous studies have shown. Participants will have a one-time eye exam using a special imaging device called the Pentacam HR, which creates detailed 3D images of the front part of the eye. During this visit, participants and their parents or guardians will complete a questionnaire about risk factors for keratoconus. This study involves children and adolescents aged 6 to 23 years who are visiting medical centers for reasons other than eye problems. Participants will attend a single visit where the eye imaging test and questionnaire take about 15 minutes. The researchers will use the images and information collected to determine how often keratoconus occurs in this age group. The study is observational, meaning it collects data without providing treatment, and participants will be involved only during this single visit.
CONDITIONS
Brief Title
The K-Map Study, Global Prevalence of KC
Who Can Participate
Age: 6Years - 23Years
All Genders
Healthy Volunteers
Eligibility Criteria
You may qualify if you...
- Male or female, 6-23 years of age
- Visiting for a non-ophthalmic medical appointment
- Signed and dated patient consent form provided by parents or legal guardians
- Willing to follow all study procedures and available for the study duration
You will not qualify if you...
- Having a preexisting eye disease or condition
- Currently pregnant or breastfeeding
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
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Your Study Journey
Screening
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Diagnostic Evaluation
Duration - 1 day
Participants undergo a diagnostic test using a rotating Scheimpflug camera (Pentacam HR) to assess the anterior eye segment and evaluate for keratoconus.
1 visit (in-person)
Long-term Monitoring
Duration - Up to 8 years
Participants are observed for the prevalence and progression of keratoconus over time.
No scheduled visits; follow-up may occur as part of routine care
Trial Site Locations
Total: 12 locations
1
USC Roski Eye Institute
Los Angeles, California, United States, 90033
Actively Recruiting
2
Eye Hospital of Wenzhou Medical College
Wenzhou, China
Actively Recruiting
3
Zagreb, Croatia
Actively Recruiting
4
Alexandria, Egypt
Actively Recruiting
5
Homburg, Germany
Actively Recruiting
6
Isfahan, Iran
Actively Recruiting
7
Amman, Jordan
Actively Recruiting
8
Monterrey, Mexico
Actively Recruiting
9
Lima, Peru
Actively Recruiting
10
Ufa Eye Research Intitute
Ufa, Russia
Completed
11
King Saud University
Riyadh, Saudi Arabia
Completed
12
Bukhara, Uzbekistan
Actively Recruiting
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Research Team
F
Farhad Hafezi, MDPhD
How is the study designed?
Study Type
OBSERVATIONAL
Masking
N/A
Allocation
N/A
Model
N/A
Primary Purpose
N/A
Number of Arms
0
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