Compare Anterior Chamber Biometry in Healthy and Post-LASIK Patients
1 other identifier
observational
100
1 country
1
Brief Summary
In this study, the investigators employed Visante-OCT (Carl Zeiss, USA), an anterior chamber optical coherence tomography, to monitor the change of anterior chamber dimensions. These data were correlated to anterior and posterior curvature changes collected with the Oculus Pentacam (Oculus Inc., Germany), a corneal topographer based on rotating Scheimpflug principle. To minimize the effect of convergence and excyclotorsion during examination, topical cycloplegic medication was used. The investigators hypothesized that if there is a link between ciliary muscle contraction and cornea curvature, installation of cycloplegic should result in widening of anterior chamber angle to angle distance and flattening of the cornea curvature data.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for all trials
Started Jun 2008
Shorter than P25 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
June 1, 2008
CompletedFirst Submitted
Initial submission to the registry
February 4, 2009
CompletedFirst Posted
Study publicly available on registry
February 6, 2009
CompletedStudy Completion
Last participant's last visit for all outcomes
June 1, 2009
CompletedFebruary 6, 2009
February 1, 2009
February 4, 2009
February 5, 2009
Conditions
Keywords
Study Arms (2)
1
Pre-LASIK
2
Post-LASIK
Eligibility Criteria
Healthy volunteer
You may qualify if:
- healthy young volunteer who has not received any ocular surgery
- post-LASIK surgery young volunteers
- all participants has to be less than 35 years old.
You may not qualify if:
- any subject with contact lens history will be asked to stop contact lens wear for at least 4 weeks before participating in this study.
- any subject with prior ocular disease
- any subject with prior intra-ocular surgery
- any subject who cannot cooperate with examination
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Far Eastern Memorial Hospital
Banqiao District, Taipei, 220, Taiwan
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Shu-Wen Chang, MD
Far Eastern Memorial Hospital
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
Study Record Dates
First Submitted
February 4, 2009
First Posted
February 6, 2009
Study Start
June 1, 2008
Study Completion
June 1, 2009
Last Updated
February 6, 2009
Record last verified: 2009-02