Trachoma Clinical Trial
Official title:
PRET Clinical Trial of Evaluation of Modified Instrumentation for Surgery to Correct Trichiasis
Trachoma, an ocular infection caused by C. trachomatis, is the second leading infectious cause of blindness worldwide. Years of repeated infection with C. trachomatis cause the eyelid to scar and contract and ultimately to rotate inward such that the eyelashes rub against the eyeball and abrade the cornea (trichiasis). The World Health Organization (WHO) has endorsed a multi-faceted strategy to combat trachoma which includes surgery to repair lids distorted by trachoma (trichiasis) in imminent danger of vision loss. Current evidence suggests that long-term success rates of trichiasis surgery are less than optimal due to variation in surgical technique. Previous research by this study team has demonstrated that shorter incisions have a higher rate of trichiasis recurrence. In addition, observations by this team's oculoplastic surgeon have led to the hypothesis that granuloma formation and lid contour abnormalities may result from current surgical practices. The objective of this study is to compare outcomes of trichiasis surgeries performed with the newly developed trachomatous trichiasis (TT) clamp versus surgeries following standard technique (bilamellar tarsal rotation procedure or BTRP).
Status | Active, not recruiting |
Enrollment | 1876 |
Est. completion date | December 2011 |
Est. primary completion date | November 2011 |
Accepts healthy volunteers | No |
Gender | Both |
Age group | 18 Years and older |
Eligibility |
Inclusion Criteria: - Presence of upper lid trichiasis: defined by at least one eyelash touching the globe of the eye or evidence of epilation - No previous report of trichiasis surgery in at least one eye with trichiasis: - eyes with prior surgery are already at high risk due to the prior surgery, and their inclusion may decrease our ability to clearly evaluate our primary outcome - if unilateral surgery has been performed previously, only the eye without prior history of surgery will be in the study, even if both eyes require surgery - Age 18 or older (in order to provide consent as an adult): the vast majority of trichiasis patients are aged 18 or older - At time of enrollment, subjects must state their intention to remain in the area for two years to facilitate study follow-up Exclusion Criteria: - Absence of upper lid trichiasis - Prior trichiasis surgery on both eyes - Age 18 or younger - Subjects who are transiently in the area |
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Treatment
Country | Name | City | State |
---|---|---|---|
United States | Johns Hopkins University | Baltimore | Maryland |
Lead Sponsor | Collaborator |
---|---|
Johns Hopkins University | Bill and Melinda Gates Foundation |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Presence of trichiasis, pyogenic granuloma or lid contour abnormality post trichiasis surgery | 2 years | No |
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